The idea of "snap-on" equipment, as Mark Rosewater put it, has been super popular with players, and it's even the basis of the Modern Hammertime deck where Sigarda's Aid fills this role
Professor's Research is still printed in many sets, since it has become a card no deck can play without and this full art has historical value as the start of it all
As it is, I think he's just okay
2024-04-12 Except for the listed exception, Oko copies exactly what was printed on the target creature and nothing else (unless that creature is copying something else or is a token
He enters tapped and attacking.) Whenever Donatello deals combat damage to a player, create a token that's a copy of target artifact you control
Even as the lowest of the Bolas cards, it still packs a punch