I know at least Kubota recommends delaying regens when in a potentially combustible environment like dry fields etc, but unless the tractor is caked in vegetation I just don't see it as an issue. That said, I would imagine it's safer to avoid it.
My
L4060 allows me to inhibit (delay) Regen, but I haven't found the need in my use to utilize that feature. I just work through the regens, which in my case is once every 50 hours. I'm coming up on Regen #17 in 6 years, so I will be long dead before the tractor gets anywhere near 2300.
If I were having regens every 5 hours my opinion would certainly be different.