Yes to all of this except the term "gas fees" is primarily a Ethereum related term.

To your point, transaction fees, latency, and the lack of ability to trust unconfirmed transactions thanks to feature added to the protocol called "replace by fee" has crippled the usability of Bitcoin.

On the other hand Bitcoin has worked out as a nice investment vehicle over the past 10 years, although you don't actually need to possess or use Bitcoin to take advantage of that.