It depends.
Some protection (and mobility), is better than none.
Since brute force tends to be dependent on reliable and extensive logistics, plus, commanders can now see the battlefield, it could devolve into the stalemate that's currently in Ukraine.
Opening a limited bit of current events
Ukraine's not really a stalemate, tho'...
Ukraine isn't going for the "grab the terrain and hold it" mode; they're going for the "grind them down until the Apparatchiki terminate Putin for incompetence." They will hold what they wind up with until the end... but they know the real victory is ending Putinesque calls for Annexing portions of external nations bit by bit, via humiliating defeats by numerically inferior foes...
Russia has numbers, and a leader willing to waste lives.
Ukraine has allowed it's troops to local improvise munitions, provided the targets are military...
Nothing so satisfying as seeing tankers bailing out because a hand grenade was just drone delivered into the interior of the overheated troops inside an aged and poorly maintained MBT. One drone tech took out 10 tanks with a dozen hand grenades and a dozen drones... (two were shot down by dismounted troops...) in a day or so. A few thousand dollars worth of drones, a few hundred worth of grenades, and $10 of duck tape and twine... taking out 10 tanks... T-90's are a few million dollars worth each; the T-14's are $8-$12 million... Basically, they're getting a 1000:1 price advantage, on a 1:100 budget.
The Ukrainian goals are happening, the Russians aren't...
Ukraine wants most to destroy the Russian ability to fight, on two fronts: political and military. The political is slow going; the military is going surprisingly well, as Russia's having to break out the old tanks to keep fielding more. Ukraine showed it could target the capital on Mayday.
Russia's also running low on non-conscript troops. Russia's gained one oblast (district), lost a different one, and is losing a second. It's got war damage to infrastructure all the way to Moscow. And miminal civilian damage — Ukraine is holding the moral high ground, as Russia's been targeting everything.
So, while it's not a lot of visible-on-the-map change, it's a strongly changing military situation as Russia's strength is being sapped further and further.