Ask yourself a simple question. Before bitcoin price became extraordinarily high as this, what made people see value in it? It is because of all these other features you mentioned. In conclusion, without the high price, people will still see potential in it and eventually invest in it, just the same way they did in the past.

I think scalability is still a problem, uncongested mempool only means transactions are waiting for less time to be included in a block but does not automatically change the fact that it takes approximately 10 minutes for a transaction to be confirmed in the blockchain. As far as I know, bitcoin throughput is limited (approximately 3-7 transactions per second) when compared to payment systems in the fiat system (e.g visa can process thousands of transactions per second). Of course we have the Lightning network which supports the first layer network, but it still has its own flaws such as liquidity management and channel routing. My conclusion remains the same, bitcoin is not meant for everyone, it is for the few who value privacy, so if you mean scalability for those few is not a problem, I agree but anything beyond that I respectfully disagree.