When you have no arguments, you just argue over typos and what not. It's nto about winning trophies, it's about managerial performances. Obviously, no-one would expect of Nagelsmann to win the Bundesliga with Hoffenheim or Leipzig, but his managerial performance at both clubs were very impressive in on themselves. Got them in the CL and really gave Bayern a go with Leipzig. In comparison - Potter has done a decent job in the Norwegian league and also at Brighton, but 15 and 16th places at Brighton, albeit very good considering the club's stature, is NOT Manchester United material. A manager needs to impress a lot more. And yes he plays good football, but tha'ts not enough. If he gets Brighton this season in the EL places or CL, then you'd have an argument. But you literally have nothing except "well, let's just take a punt on the guy because he plays attractive football" at a time where the club is desperate for a person that can win right now, not 6 years from now or whatever.
As far as Conte goes, would paying off 10 million to Conte be so bad after winning the PL, compared to giving Ole 500 million to spent with nothing to show off and sacking him for 30 million? Would it be that bad? I'd take that deal any day of the week.