I am not sure if I will classify current squad as strong.
Arsenal had an arguably stronger squad before Arteta bought any player into the club.
I'm sorry, but this is one of the worst opinions I've read so far this week. You might want to refresh your memory and take a look at that 19/20 Arsenal squad.
Amorim will straight away have these at his disposal after arriving at United:
-A technical goalkeeper who's an elite passer and ball-player. Arteta had Leno who's shit with his feet and probably not even above average as a shot-stopper.
-Elite level CBs in various CB roles in De Ligt, Maguire, Yoro, and Martínez. Arteta only had Saliba who hadn't even played a competitive match for Arsenal at that point I think, so he had to phase him in much like Amorim will have to with Yoro. His other CBs were an old Luiz, Sokratis, Mavropanos, Holding, Chambers, and Mustafi.
-30 goal per season striker prospect with a great mental profile in Hojlund. Arteta was given two disruptive, past-it players in Aubameyang and Lacazette.
-One of the best #10s in the world who's the 2nd best chance creating machine on the planet after KDB in Bruno. You can argue Arteta had Özil, but that never worked out between the two, and Amorim will almost certainly get along with Bruno very well, so I will most certainly list Bruno as well.
-Already established youth players in Mainoo and Garnacho. Arteta had to integrate the likes of Saka, Martinelli, Nketiah, Nelson and Smith Rowe by himself.
-30 G/A inside forward in Rashford. Decent wingers in Garnacho and Amad. Arteta had Pepe and Mkhitaryan.
-Solid full-backs in Dalot and Mazraoui (Shaw and Malacia too if they ever return at this point). Arteta had Tierney, Kolasinac, Bellerín, Monreal, Cedric...
-Mainoo and Ugarte as defensive/central midfielders. Granted we need to, and will add quality here, but Arteta had to give a lot of minutes Guendouzi, Ceballos, and Torreira, before being able to add add real quality to his midfield.
The only player who was already an established first teamer, was at a good age, and had both good ability and most importantly a good mentality, was Xhaka, when Arteta took over at Arsenal. So arguably one player from the whole squad.
The current United squad is objectively light years ahead of the mess Arteta had when he took charge of Arsenal.