I'm guilty of just hitting the like button instead of saying something, either I'm busy or on the phone (and I HATE typing on the phone).
I'm somewhat guilty of this as well. Mostly I will hit the like button most of the time when I really like an image, but I don't comment unless I have something very specific to say. That doesn't mean the specific has to be negative, if something really grabs me, I try to comment on that as well.
Typing on a phone is a chore, I know. I find it hard enough to type on my 10" tablet. But when it comes to feedback, I feel like I have evolved light years thanks to the last 12 years of community feedback. If nobody said anything, I would probably still be doing the same mistakes.
The class is at Santa Monica College (they have an Entertainment Design track), and the program is Maya. That's about the only program -- apart from AutoCAD -- that I've been able to find that I can take actual classes in. Mainly because people actually get hired on the grounds of being conversant with it. I get a strong impression that many of the instructors are industry people who are effectively moonlighting.
Depending on the area, 3DSMAX and Maya tend to be the industry standards. Until now, all the 3D modeling jobs I've got used either one or the other. However, Autodesk started to undermine 3DSMAX in favor of Maya, by "forgetting" to add significant new features since 2009. Instead, all the cool stuff goes to Maya. There were even rumors at CG Society about Autodesk terminating 3DSMAX after years of neglect, but I don't think they would do that. At least I hope not. For example, MAX 2016's main new feature was a chamfering tool that actually worked. Until then, the tool would destroy your model, so it's actually a bug fix disguised as a new feature. As if not enough, Autodesk hides actual new features in a subscription program, which is a legacy from Adobe. So buying the program is not enough - you still have to pay for a subscription.
Personally, I use 3DSMAX because of its straight forward workflow and quick learning curve. On the other hand, I have started with Maya when it was still owned by Alias WaveFront, and I think it's the most powerful tool in the market - nothing compares, but at the cost of a steep learning curve. Maya's workflow and interface are definitely not for everyone, but it unleashes a power like no other program I know of. 3DSMAX used to be Autodesk's flagship product from the very beginning, but things changed after they acquired Maya from Alias. After much of complains, 3DSMAX 2017 was the first "decent" release since 2009, where apparently all the energy seems to be going to Maya. So much that Autodesk has unified their 3D applications (including MAX) to look like Maya.
If you plan on getting a job in the 3D industry, those are the programs to learn. Generally, MAX is used in gaming and architectural visualization, and Maya in TV and movie productions. In Hollywood, California, the Gnomon art school is known for being one of the best in professional 3D training, where Maya and zBrush are their main tools. All of their teachers are veterans from the 3D industry, and they take you to a tour in Hollywood studios in the last year, with possible chance of getting you hired on graduation.