No good reasons to have them on the list although I still see some people saying good things about them in this forum.
people who are saying good things about them are either -EV sports bettors or just fake reviews , in theory they have no reason to scam -EV bettors cause they will keep generating the site more profits ( but I guess they may be scamming these players as well )
I have tried them in the past and if you do solid bets then 1xbit will be a gold mine , they offer all the games from ITF to shady 2nd and 3rd African leagues so they will just scam anyone who is beating them especially with these leagues