Intel PT is another thing that's worth calling out since 2015 (see the other article on the front page right now, https://news.ycombinator.com/item?id=31121319, for something that benefits from it).
It does look like Hardware Lock Elision/Transactional Memory is something that seems like it will be consigned to the dustbins of history (again).
A number of companies invested in doing the software development to take advantage of TSX (as the performance improvements helped databases by companies like Oracle), so Intel certainly lost a lot of credibility. And Intel is jerking software developers around again with the latest vector instructions that keep getting turned off in desktop / laptop SKUs and only being available on servers. Intel has done quite poorly over the past 5+ years on this front.
It does look like Hardware Lock Elision/Transactional Memory is something that seems like it will be consigned to the dustbins of history (again).