For me all these things are good except the last one (if you mean partner games in the bottom left corner, I hope they're not A/B testing Google Ads in the app). My profile is more low key but I don't hate others for going heavy on the effects. It's just self expression.
What I don't like is the way they used to sell Nitro before they came up with the flashy cosmetics, restricting features that used to be free. And how they used a third party service for UK age verification that ended up hacked. And their security record in general. And being closed source with no official export tools.
I guess its all subjective.
> no official export tools.
There actually is technically an official method to request a copy of your own data (think Google Takeout): https://support.discord.com/hc/en-us/articles/360004027692-R...
I've used it once. It worked to recover some messages from DMs that were far enough down in my history they were no longer shown in the web/desktop UI. However, it only included my own messages in each DM/channel, without the context of whoever I was talking to.