I totally support bringing in actual specialists, or fantastically talented people from abroad… but it’s painfully obvious how infrequently that happens. I worked with an H1B doing L2 support in the mid aughts. The position required significant knowledge of networking, but nothing close to even a mid-career enterprise network administrator, and it wasn’t a rare skillset for the area. We had plenty of very local candidates when we hired people before, but suddenly, new management decided it was an incredibly specialized, difficult-to-fill, rare job that paid locals an eye-watering 70k/year to start but paid an H1Bs far less than that I assume.

That's the problem. H1B visa is for talent that is almost impossible to get domestically. It should be for bringing in actual specialist.