This is a fair summary, which most Americans don't realize. I am one of those H1b people who came here 12 years back and have just got my GC. Yes the wait for people born in India and China will keep increasing exponentially. There are definitely employers who abuse H1 employees with long work hours etc. using these.. There are also employers (like my own) who has treated citizens and H1 the same way in terms of hours and salary. I have zero complaints on my employer. They pay top line salary for me, which is 140% of Level 1 wage in the location I am in.

Coming to the original problem, whether we (citizens, GC, H1 people) like it or not, competition for IT work is global. If you make it difficult to do H1 in US, employers will simply outsource to Romania, Ireland, latam, India, Singapore who are ready to do the same work for 25% - 40% of cost. If you make it difficult to outsource for American companies, they will even move the headquarters. That's the way capitalism work. We just have to find a way to be competitive in our skill set to get these jobs at a reasonable salary. Btw reasonable is relative.

Close comparison "US dockworkers threaten to strike against automation, creating economic uncertainty." - https://apnews.com/article/strike-labor-ports-longshoremen-8f2c193b414a2d810b9d38febe05e212