Right, they need close air support, infantry support, scouts, supply chain logistics etc. all working together to be peak effective. If you just give some dudes an Abrams and a crash course in driving it and firing the main gun, they will be better off than the same crew of randos in a technical made out of a Toyota Tacoma, but they will still be vulnerable to modern threats.

It's easy to understand why the modern drone threat is uniquely game-changing if you think of war like chess. Most advanced powers have now figured out that having a developed drone program is like giving yourself infinite pawns. You keep trading pawns for the opponents more valuable pieces. If Russia is able to spend a few thousand in drone hardware and explosives and destroy a multimillion dollar tank, they'll make that trade any day.