Its not the temperature per-se, its the combination of the temp and the boiling action itself. I wouldn't want the tips to bounce around or impact the container or each other, and submerging an electronic component into boiling liquid is different than the injector just standing up to engine heat and some moisture.
IMO just because it
might not mess anything up, doesn't make it something we want to reinforce. Some "pioneers" in the import scene decided that immediately pre-boiling gas before combustion could help with atomization...and when they did it right, the car didn't immediately blow up....but that doesn't mean its something I'm running outside to try
