I will also complain. I use the 32 bit x86 environment regularly for testing. I have found several bugs and worked with upstream developers to create fixes.
The developers never said anything like "this is a waste of time because it was found on 32 bit". Instead, they were universally supportive. As an example, Thomas Gleixner said that the problem we found would only show up on older hardware, and he affirmed that it was a bug that certainly needed to be fixed ("NOHZ: Check for nohz active instead of nohz enabled"). I actually think this is an _opportunity_ to engage aspiring kernel programmers. Give them some guidance and have them actively test and do simple maintenance of 32 bit x86. Yes, I am prepared to take the lead on this if it is something you want to pursue. - Matthew Whitehead