just like the survey, your own tally is going to reveal flawed results

first of all you are asking in a crypto group. thus always going to get a result of every respondant saying they have coin

next those respondants more then likely gave coin to friends and family. even if the family dont know/understand crypto. EG future inheritance, free givaways, and such

next many 'geeks' 'nerds' dont have a massive diverse social group. so the variety of friends is limited. for instance if you asked warren buffet how many friends/family have stocks/shares. he would say all of them. because he is not the type of guy that makes friends with the homeless or waitresses on minimum wage.

...
as for other surveys
i have seen people on the street with a sign saying 'please answer a survey about charities'.. the results are that a high majority of respondants do donate. not because high population donates. but because those who do not are going to avoid entering into the survey to avoid embarrassment/shame of being seen as heartless

in my town whenever people see someone with a charity asking for donations, the common thing to say just to walk passed them is 'we already donated'. not only does it avoid having to put our hands in our pockets, but also avoids the guy stalking us trying to convince us, and avoids them shouting out bout how we have not donated but should.

the other surveys are based on like 2000 people out of ~327million.
these surveys usually would be mail bombed to known people in a certain industry, and also exclude certain population groups.

take for instance americas 327mill population ~60m are below the age of 15years and 50mill are above 65..
usually surveys exclude these age brackets meaning a third of the population is excluded

so if say 33mill say yes on a survey of such the actual % is not 10% but actually more like 6.6% if it was a true population survey no matter the question

then we get back to further shrinking down the survey by respondants. not everyone is interestd in filing out a survey about their finances. so this could cut the pool of respondants in more than half whereby the poor/uninterested in investments
wont respond. thus even AT BEST it would bring results of 3.3% true population.. though a survey site would still try to presume 10% said yes

its much like going to a trump rally and doing a popularity poll. ofcourse results would be majority fangirling over trump