Kritiking there being any worst active debater at all.
The question of a 'worst' is more complex than best. Statistically, we can't deny that Oromagi is the best because when it comes to 'best' there become clear-cut ways of deciphering it. That said, to some I (Rationalmadman) am superior to Oromagi because I take more topics and come up with more creative angles in general. To others, Ragnar is superior to both Oromagi and myself because he has even beaten Oromagi a while back on debate.org.
These concepts don't truly explain anything about a definitive best but what I want you to understand is that the best is still vague despite being far clearer than the other end of the spectrum. When discussing the worst, a virtually infinite series of dilemmas occur. The first dilemma is whether or not a certain severely low stat (such as Rating/elo) is to be weighed as more detrimental than refusing to readily create debates. The second dilemma is why they are bad, are they setting out to be and holding back on purpose? If so, is that worse than the one who is trying and still sucks? The third dilemma is potential to snowball later on after they improve, because like a weak horse that you're betting on in the long run to improve over time beyond the rest, Mall may be a god tier debater in the making.
There are far more dilemmas than I can type here, they genuinely approach infinity in the amount there are.
Noticing and appreciating what Mall brings to the table
In later Rounds, I'll defend against Pro's attacks to Mall, for now I'll simply appreciate him for what he is; a creative and enthusiastic debater. We see only Seldiora being superior to Mall at rate of debate-creation, meaning if it wasn't for Mall many who have risen above him couldn't even have risen at all and shown skill in any Rating-based sense. This is not the same as saying a bad player showed up and happened to be preyed upon, I am saying that in percentage of debates that have happened whatsoever to enable debaters to rise and fall in the ranks, Mall is an extremely significant factor and gives topics that even when they are mainstream are angled differently and much more about exploring the ideas than simply 'insert your mainstream arguments here and have a normal debate'.
Mall has forced a well-respected debater here, Ragnar, to actually have to try hard and put out a lot of character count and effort into explaining how and why Hitler was a racist. While Mall lost, he's beaten me when I underestimated him.
The voter who truly secured this win for Mall was Oromagi, one of the best there is.
Mall defeated me on a topic we had already debated before
and I underestimated him and lost. This shows potential for him to improve over time. He is in fact so open to improving and learning from his mistakes that he has allowed this debate to exist and has created 2 debates to understand his flaws.