I hate those plastic boxes. My whole neighborhood has problems with lights falling from the ceiling because of them. Most all of us have gone into the attic or paid someone to go into the attic to replace them with metal connection boxes. I found several that just crumbled in my hands when I was removing them. We are building a house next year and no way I'm using plastic boxes there.
what I have always found interesting is that back when I was an industrial electrician I was told that the reason that plastic boxes were not allowed under the code for use in commercial applications was that they could let off toxic gases if there were a fire - - I never understood the reasoning where if this were really the case why they were allowed under the residential code. - - like its okay if you kill home owners with toxic fumes, but not workers???
or is that like them saying you don't need a mask at all before requiring a mask? Who knows... I was back to normal well before the vaccine was ever available. Glad everyone can start catching up.