The problem with people who โdo their own researchโ is that most of them arenโt even capable of reading a summary of a scientific paper and understanding it, much less reading the paper itself and making sense of it.
Thatโs not the only hindrance, of course, but it is a major one.
To โdo your own researchโ in most fields you need about a 140 IQ minimum. The average IQ in the US is 100 and only 0.38% of the population has a 140 or above IQ.
Soโฆgood luck with that.