I think this is a problem with the industry as a whole. You're generally not very valuable as a new, junior, or in-training developer, so to go from no knowledg

I think this is a problem with the industry as a whole. You're generally not very valuable as a new, junior, or in-training developer, so to go from no knowledge to a place where you can learn and earn is tough. However, this creates a squeeze for proficient senior developers. The industry creates a bottleneck for early-career developers that restricts the supply of mature developers, which affords these developers very high market value. It's not surprising to me that there are ads like this or sites where people can and do willingly work for $3/hour (and not just because their cost of living is lower), while at the same time the higher end of the market starts at nearly 6 figures fully loaded. The market wants senior developers, but doesn't want to invest in junior dev to get there.