Another DM hater! DM was the best! Everything after is terrible! I don't know anything about Yugioh after DM but I know for sure they are bad. I don't even know what they are but Synchros, XYZ, Pendulums, and Link summons are ruining the TCG! Yugioh was much better when it was just DM and if you don't agree you're wrong!
As for Synchro and Xyz...
Most Synchro monsters by themself is not broken within Duel Links due to the requirements and the limitations within Links itself. Xyz however can be problematic if implemented unless handled carefully, due to their nature itself.
if u stopped playing a game because there are a few idiots who blindly worship the original stuff ur just as dumb for refusing to play the game because of them lol. those people make up such a small part of the pokemon community that its kinda hilarious
The first generation will always be the best I tried GX but it didn't catch my attention nor did any other afterwards, besides duel links is already very simplified adding other generations will complicate it.
I ignored the rest of your post because I don't know anything about YuGiOh besides what's currently in Duel Links and a little from old GBA games, and never really watched the anime besides some episodes here and there as a kid, so there's nothing to say. You just gotta accept that some people will only like the original stuff because there's nothing you can do to change their minds.