The main thing that differentiates computers from biological beings is that in IT a virus affects 100% of a given species. And you can't hope that swallowing vitamines or resting will fix the problem for you.
Let's be glad that so far malware contamination via GPUs a) hasn't been a daily issue b) may have someone at least trying to fix it (design weaknesses can't be fixed after all).
And the malware crowd might want to move there, once other defenses become to arduous.
Because otherwise your PC with an older GPU may quite literally turn on you, typically when you least can afford it.
After more than two decades at the core of real-time payment processing, anything without security support from a vendor to me feels like running naked high-voltage wires through your home. That support won't guarantee survival, but it reduces the odds in your favor.
Is it enough? Only time will tell.
Is it better? At least it doesn't lower the barrier. And enemies always look for the weakest spot.