I think what I'm using is rigged, just realized that the online tool I use just gives out rigged values and that's why I encountered this address
Sounds like whoever created the site you are using is trying to scam people by spitting out pre-generated addresses regardless of what string you enter to be hashed.
It shows as invalid address but blockchair shows only the BCH balance and not BTC, I changed the checksum myself, isn't it weird?
As pooya87 says, it's a bug on blockchair. You can enter any checksum and it will still find the corresponding BCH address with the correct checksum listed as "Legacy address format", while showing an empty (and invalid) bitcoin address.