Yes there are challenges with adoption. Limiting the transaction capacity will not help.
It is a very stupid argument. Saying that current block size is limiting adoption is like saying a place is not attractive to people because it's overcrowded...
For minors is not important the number of people and entities that pay tx fees but the overall tx fees paid! Of course, the size of the adoption is important but even more important is the quality of the adoption. Increasing block size and giving free block space to even more spam will not help bitcoin adoption for sure!
"Quality of adoption" lol.
Miners are already free to include/exlcude whatever they want.
And a fee market exists without a blocksize cap.
Peter Rizun wrote a whitepaper proving it.
If you know any academic papers offering
a rebuttal, please link it.