I have been on Debate Politics for nearly 10 years. I have posted about 10,000 times. I am also an outspoken critic of Donald Trump. I have not had any of the experiences that others have talked about. I have debated moderators without an issue. In my tenure, I have never received an infraction point (though I know that is rare), though I have been warned a few times. The warnings, however, were polite and appropriate (I deserved to be warned).
I have not been on that many debate sites, but I find this one to be pretty good. I usually can find good posters to debate with, though since Trump's election the character has changed a bit... the best conservative posters have become never Trumpers., while the Trumpers are zealots and not always interested in reason. It is often difficult to have a serious conversation with them. The pre-Trump era debates were much richer.
I actually think it is a well moderated site. Most of the people that have been run from the site, should have been run from the site. There are probably two or three that need to go, but I bet they are gone by year's end replaced by three more classless idiots... but, that is debate on the Internet.
The Basement is its own sub-culture and bit clicky, as represented. But, if you come to the site, bring your best debating game, are reasonably well informed and can disagree without being disagreeable, you would be a welcomed addition.