You just need to change "people on here" to "people on the internet"... or indeed "people in life". People will always want to brag about successes, but try and hide failures, for obvious reasons. Still, it's not helpful or useful to anyone, but anyone experienced in whatever it is (be it stocks or any other business) will see through the bull.
Personally all my stocks are long term, always have been, so I've not touched a single thing. What with it being the end of the tax year I've already invested all I can in my ISA so realistically no opportunities missed either, if there's realistically been any. My current portfolio is down 10%, I couldn't tell you exactly what it was immediately pre-CV19 but it was around 17%, so 27% down.
I'm only -1.18% on the S&P atm which shows how much up I was pre-cash!