Trustpilot has a bunch more reports following the exact same formula.
I didn't even get the KYC request just a straight up limit to 1$ max bet and account block. They refused to respond to what I had done specifically to break the TOS.
Like you, I bet on pretty niche stuff and I think they really don't like it when players use their expertise to profit.
It's sad that trustpilot has so many bot with fake reviews.
Niche or not, it doesn't matter. Betting on Dota 2 or MMA is not against ToS anywhere in the world.
Our fellow scammed colleague in the comment above mine from @bettingfede1998, was banned after betting on money line Champions league football matches. There's nothimg more mainstream than champions league.
So, niche or not, they just scam. Shameless.