I think everyone appreciates links to similar projects for comparison, but a more in-depth comment would probably come across better - the "less principled and more primitive" sounds like a thoughtless off the cuff ad hominem dismissal.

Consider that some engineers poured a lot of heart into what they were building, and are probably excited to finally share it with the world.

I am not saying you have to love it, but just brutally putting it down with no justification seems really rough. Snark is easy.