Salary is quite irrelevant. It seems like a large cohort of USCIS officers are trying to eliminate everyone on the H1B, and this is being encouraged by the Trump administration. The sad thing is that denials are completely arbitrary and random, and depends on who looks at the case. I know one person who got approved (for a job as a SWE), soon after graduating from college (transitioning from OPT), despite a low (~100k) salary. So some people get lucky, and slip through the cracks, so to speak.
But in general, USCIS isn't judging cases by their merit, they're not treating jobs with high salaries favorably; the general attitude of this administration seems to be that: if you're from another country, we don't want you here, no matter how well-qualified or well-paid you are.