Braiins used to talk big about open source then they did a 180 and quietly closed their source code. They also use FPPS which lets them do shit like keep out of band fees for themselves w/o compensating the miners. I don't know if they have abused this power but nothing is stopping them. DEMAND also recently announced they will launch with Sv2 support like the same day OCEAN went live and everyone collectively shrugged and started yelling about OCEAN. All the other pools are more or less the same: KYC & FPPS. More pools presenting more options is better, exactly like Luke said.

Actually, @Leo Wandersleb said it best. More pools, especially with low switching costs, is the big win. BTW with OCEAN you need to stick around for 8 blocks to get the full payout iirc. So the switching costs are not that low...