Can we trade a little security for wider adoption? Would wider adoption make it more valuable? Nobody knows.
How much will the value of bitcoin drop when people realize it can never scale? Nobody knows.
You aren't sacrificing wider adoption of Bitcoin. You are sacrificing wider on chain adoption of Bitcoin.
Bitcoin can scale perfectly well with off chain transactions. History has shown us this when the "off-chain US dollar" was backed by "on-chain gold."
Your trading a little bit of Bitcoin security for adoption is akin to making the gold more easy to counterfeit.
You are suggesting to use divide-and-conquer tactic and back it with historical facts demonstrating that it worked perfectly well for the conquerors. I suggest we keep united and seek for solutions together. Bitcoin is here to stir the pot and wake people up. Ding!