Is that so? I wouldn't trust the USA to commit to its NATO responsibilities anymore. The rest of NATO, torn as it is, could just as well find all kinds of reasons why this particular attack isn't a "real" attack, just to avoid the confrontation.
I wouldn't bet on that scenario happening, but as Russia, I wouldn't dismiss it outright either.
Because if russian troops appear in EU countries, EU might be more willing to accept Ukraine losing larger territories in peace deals. That's why EU has to - once attacked - hit russia so strongly, that they will retreat on our conditions.
Because it would force NATO to divert resources away from Ukraine.
- https://youtu.be/z61ZuZ08jRA?si=_GChfuUptluluave&t=602
- https://youtu.be/NCEKsF9w8uQ?si=WkguFDu0vSdm1dbR&t=405
Also, most of NATO's existing resources are currently not doing much but standing around. You can question how useful NATO's 'pre-drone' material is, and how much hasn't already been sent to Ukraine, but it's not nothing.
The official discourse in Russia is that NATO is already helping Ukraine launch things into Russia. So there's no gamble; for them, it's already a fact. Except, currently, it's just a proxy war where Ukraine has to jump through hoops to get military aid and targets approved, and it can only fire from Ukraine's territory. With a direct confrontation, there's no doubt that far more would be launched into Russia.