Im several months into my self taught SWE journey!

As soon as the economy is healthy again I'm going to apply for my first SWE position! Im excited!

BUT

Im leaving a great sales trainer position for the switch!

Youtubers like "Techlead" make me feel fear about the longevity of the career path. That down the road SWE will be less in demand and thus paid worse than they are and that the "glory" days of SWE are behind us.

How much merit do those ideas have?