I don't agree with the tweet as a reason for not having scaling. If we don't have scaling it should be either because changes to Bitcoin need to meet an excruciatingly high bar and the current proposals don't meet it in the eyes of the community or scaling poses serious risk to the decentralization or security of Bitcoin. Those would be some of the viable reasons in my opinion.

Some people don't want fire insurance either because they may never need to use it but if they do need to use it they are sure glad it is there. If people don't want to self custody that is their choice but hopefully it will be there for them when they need to self custody.