Ok. I got it. Literally speaking there are two (maybe more?) known bugs. Do we know how many are there for Windows and macOS? I get freezes every now and then under macOS, so there _might_ be memory management issues there as well.
My point stills stands because I believe that the bugs you posted are largely inconsequential. Bugs could be very well been patched by now (or not). My guess the fix won't uptick the % of linux in desktop or server market.
IMHO "the truth is in the pudding": if the largest share of mobile OS's is based on linux (android) and largest % in servers in again based on linux, memory management is overall good enough - otherwise the market share would have dropped considerably.
UPDATE: Revisiting the thread question... I'm barking at the wrong tree. The question wasn't about relevance and market %. Your comment is to the point.