I suppose that in the MC community, there is a certain level of trust to "SS Tools". Since there aren't "that many" SS tools. I also think the culture is different in competitive minecraft, since whenever I get SSed I usually see a pattern: "They use Anydesk", "They use either Echo, Paladin, Avenge or Actova" and "They usually do dome manual stuff in process hacker" and this usually makes me feel more comfortable. Its ok to not wanna get SS'ed in the community, but this usually comes with a punishment, like a permanent ban, or a temporary one. The SS'ing process in the MC community is more of a "Last chance to prove you are legit before your cheating ban" rather than a "I SS you just randomly".

In Echo's case they have taken action by now taking logs and looking at the custom themes where people used images such as "launching booter" and "Injecting rootkit" and are now handing out punishments to users who do that. ( Reference to Joshyer's announcement: https://media.discordapp.net/attachments/852881172152844318/... )

I would also understand why people would be confused about what a program such as Echo does, Its not a remote access tool, and it does not provide any access for anyone after the fact. Here is how it works if you are confused: I tell the person to send me their Anydesk code, then I go to the panel of echo and generate a pin, on the person in question I run the tool and enter the pin, the tool does some magic, removes itself from the pc and then i can see all the info I need like Program start times, Ran and Deleted files, internal strings, etc. Without ever leaving anything on the users PC, except possibly a log file. After the fact I have no access to the users PC or data not necessary for scanning, and the program has been deleted.

Addressing your points:

1) Of course it doesn't, but again, Its not Echos fault that some of the custom themes were posted, and some of their competitors dont exactly have squeaky clean records either, But the fact that echo removes itself, makes it either seem legit, or like the worlds worst virus (Canadian Virus; "Woops didnt mean to infect your PC, ill just remove myself, just carry on.").

2) Welcome to minecraft, a game where you download a zip file, run a .bat and boom you have the source code. Minecraft offers no internal anticheat so therefore using a solution like Badlion's BAC or lunars (No longer existing) Lunar Online mode can help since they catch cheaters by running in the background while the game runs, looking at DLLs and inputs to determine if a person is using a advanced Autoclicker, or a bad cheat like VL. Minecraft has plenty of serversided anticheats since creating Plugins for servers is even easier than creating a modded client. The issue with the game is that it runs at 20 TPS, meaning that you only have 20 samples per second to deal with, this can lead to major issues and some things just being near impossible to detect without a client sided component. And i can tell you, on minecraft servers (especially Practice, Kitpvp, Kitmap, HCF and SMP) Cheaters make anywhere from 5 - 50% of the playerbase. Where people use anything from mild 8 CPS autoclickers, to TPAura, Fly, Killaura, etc.

3) Well again, the culture is different, Some people decide to click the "Quit to menu" button, indicating that they would rather have the ban instead of proving they are legit, or having the embarrassment of being proven a cheater and having the slight public humiliation of the "PLAYERNAME has been removed from the server for "Cheats found in SS"" message getting sent to everyone on the network. Then there are the people who either think their cheats bypass, or who are legit and who aren't afraid to show whoever runs the SS Tools. So again, the culture around SS Tools in minecraft is different than, lets say Xonotic.

Hope this helps clear up a bunch of stuff.
(Wrote more than for my final exam right here lmao)