Read and think critically. It is all arbitrary. If we cut off people at 18 or 24, why shouldn't we cut them off at 50? There is scientific evidence both ways.
Not to mention that IQ is pretty much a farce and completely biased by certain types of education and only measures a small subset of human brain function, The cutoff would also be completely arbitrary.
Not everything is a personal indictment on you or your beliefs.
I am an electronics engineer, so I work a lot with sensitive components. You basically only need them for a few static sensitive IC's, or when doing production where you handle many many PCBs that may or may not have sensitive components. Generally you only need a desk mat OR an ESD strap OR ESD shoes/heelstrap + an ESD floor (unless you are in a cleanroom) You discharge yourself every time you touch the mat at all.
Pretty much every modern MCU and almost all ICs have ESD diodes on the pins, so they are much more difficult to kill than 10-20 years ago.
Modern computers have so much protection in them that even with an ESD gun, it can be difficult to kill them. Electroboom and LTT did a decent video about it where they tried really hard to kill a PC with static and it took a lot of effort.