I don’t think so. They have a reason for that to use this. I think its provide more flexibility, and more ‘transparent’ for PL regarding the underlaying ‘hardware’. CPU, GPU, NPU - all just ‘hidden’ behind OS/ONNX (as i understand). PL ‘just call’ ONNX calls, etc. ONNX is quite a standard, etc.
So, i think ONNX is a very good choice.
As others have said, ON1 Photoraw 2026 and C1 work fine.
For some (may a lot) PL9 just works fine. For some less fine (* i write another comment about that, as i think to ‘break down’ PL issues is may also important for this discussion).
For some (may a lot) C1 works fine, but for some may less, same with Lrc and so on.
Forum(s) has a bias (tend to talk about problems)
Different software’s. Different way of working.
if you are correct these GPU driver issues will just continue to plague Photolab.
I think ‘we’ over (may more-or-less) in this times.
GPU drivers is ‘industry wide’ problem, it not uncommon. Not surprising most of the ‘affected’ is graphics/video orientated applications, like DaVinci Resolve, Adobe Premiere, definitely not uncommon with Lrc, may happen even with C1., At least i crawl thru some forums and similar (I not dig too deep) - but it was mentioned: forums is bias. Seems most of the issues seems with nVidia, and i not see too much about AMD. Of course, its also bias, as may most of the users here use nVidia.
This type of issues not limited only to GPU - like when Lrc disable to use the Mac Neural (NPU) a few years back due some quality issues (or some similar)
Even in the forum i see comments what nVidia driver version was okay for the user, also DxO write about that for a while. So i think with ‘go-back’ with driver versions (to the last stable for the user) also can help. Even C1 mention this ‘older driver’ thing in their support page. I think the ‘use the lates version of GPU driver’ may better call like: If you current is table, you can try newer, if its not works for you, go back to your last.
Sometimes its need to work out Driver version arranged different softwares. One example of mine (also bias 
!): few years back it do ‘driver downgrade and try’ different GPU driver versions, where ‘everything’ works: PL (7?) DP export stable, Lrc (something actual version then) GUI less sluggish on masking (it was terrible, and i can reach only just less sluggish), and Civilization VI not crash every half an hour. Takes like 8 driver version and so on, when ‘everything works’.