This war and the Armenian-Azerbaijani conflict have demonstrated that in this era of modern technology armored land vehicles, naval surface combatants and helicopters over the battlefield are death traps against even a moderately sophisticated, well equipped opponent.
Yes and no. Helicopters are still doing well - their losses have not really gone up as a percentage of missions much since Gulf I through to modern day Ukraine. Naval surface combatants that do NOT have CIWS-type systems with deep magazines are going to be in trouble and armored vehicles that do not have an active protection system are toast.
Our Navy is hastily refitting all those CIWS systems we removed or omitted from our recent warships... and the US Army is hastily retrofitting our Abrams force with Trophy APS rather than wait for the vaporware Raytheon QuicKill system any longer.