Discord in general is a wretched hive of scum and villainy.
From TOS, business practices and devs/staff down to userbase. Heavy users tend to be the worst. Of course some good and normal folk use it too because of its decent functionality and somewhat monopoly position for its niche.
I recommend staying away from it.
You are certainly entitled to your opinion but my experience has been otherwise. I interact with 1000s of people on the platform and most of them are good people. The community is no different than people you come across anywhere else in the world. It's just people.
I have been using Discord for seven years and am a member of over 20 servers mainly in the video gaming community. Aside from the occasional user that is a troll, which is common in the realm of video games, I have never encountered a problem with any thing else you mentioned. I don't think I have ever interacted with any Discord devs or staff.
I have heard of a couple of scams perpetrated by people but just like with your email and cell phone texts, don't click on a link in a private message from someone you don't know.
People here asked for a Discord to use to have live discussions so I created one. I have put things in place to prevent trolls and people that are not actually part of BNut from causing a problem. It's been in existence for over a year and we have had no problems.
If you don't want to participate, don't. It is your choice but don't disparage others for participating.