If commercial software works for you, then use it. If open source software works for you, then use it
My point was really that you don't have to pay around $1423 for a software that you can get for free, one that is just as good.
Whether there is actually such a program depends on the field.
* Blender is an excellent 3d software, and it does sculpting too (which is hellishly fun), but not as well as ZBrush.
* Similarly, GIMP has a vast range of capabilities, but there are still a number of features in Photoshop that they are no equivalents to yet in GIMP. The converse is also true (eg. GMIC)
* On the other side of things, AFAIK there is really nothing commercial or otherwise that begins to compare to GPick for RGB palette editing, and
* I'm not sure if there even IS any commercial equivalent to Alchemy.
For someone who is aiming to produce a lot of works (as a serious artist must), you can adapt your artworks somewhat to the tool, but your tool must also have what you need to get the job done efficiently. It's just like anything else, ideally you would use OSS for everything[1], but just like anything in life, there are areas where it's not as effective to do so. If those areas are ones you deal with, then compromise is necessary.
I'm not saying 'buy the expensive package if you want' (I'm no fan of -mindless- individualism), I'm saying 'work out whether you genuinely need the expensive package, and act accordingly'
[1] I do use OSS for everything, BTW.
You can't be totally oblivious about the turning of the market/products/commercial/giant companies. If you actually read a lot about it and the consequences and aftermaths it makes
I think you will change your opinion.
That scores about 30 out of 10 Nopes.
You just won't get people to change with vague statements -- vague statements only feel good or informative to people who are already onboard. Change is hard, you have to show people -concrete information- about -specific programs- showing that it's worthwhile to change, rather than assertions of the general superiority of OSS. For example David Revoy uses MyPaint and has his own CC-licensed brushset for it and a number of videos showing how he uses it. That is the kind of stuff that people can use to make an informed change.
Hell, saying "I get a lot out of OSS, with the community and responsiveness, I feel more involved and capable than I ever did using closed-source software, and I personally have migrated all of my workflow to open source software" also has information value; it says that 'someone else has already been here and had a good experience, so maybe I can do this and get something out of it, too'.
Also you can't expect not to get any reactions if you did intend to open a discussion or say your opinion about the subject.
My comments were about software that is relatively -specialized- (MyPaint, SAI, Alchemy, etc) versus software that is extremely -generalized- (Photoshop), and the bad reasoning involved in portraying Photoshop as more of a drawing program than.. well, a program that is -actually- dedicated to and optimized for drawing.
If I somehow brought OSS into it, by all means point out where -- I intended to specifically avoid that issue.
Try at slime coming up

Is this supposed to be a sort of 'mixed viscosity' effect, with some parts being more runny than others? It looks like some kind of slime-newt stepping out of the cup. You got a lovely squishiness going, maybe you could 'sag' the eyes (this seems to be a common technique in drawing slime-creatures, to give more 'runniness' by having the facial features running.) Or an extra color (would come in useful for softening some of the spots on the back of the head.) Nice expression , too

BTW there seem to be two identical copies of it.
EDIT:
Wow, pretty impressed by the new one. those little spots work much better at a larger scale, and it looks so animated, as well as having a pretty solid sliminess everywhere. OTOH the back hand feels a little uncertain, and perhaps it could do with more reflected/refracted light where surfaces are curving away from the camera.