I think at the moment blockchain is synonymous with "crypto".
Imagine you fell for a ponzi scheme. Now imagine you knew where the person who ran that ponzi scheme was.
The remark is a bit flippant (and feels grammatically incorrect) but the sentiment remains.
Lots of people view crypto as a get-rick-quick scheme on both sides. Even after warnings of "don't put any money in that you aren't comfortable losing" people put in money that they aren't comfortable losing. Coupled with the fact that most of these crypto projects maintain very high levels of community involvement (normally through discord/twitter). Sometimes when people lose a lot of money they lash out at the systems they lost money through. So they turn on the devs of whatever chain/token they gambled on.