It's a matter of priority - you can get by fine without using keigo, and instead of learning all the weird intricacies of keigo you could go learn something mor

It's a matter of priority - you can get by fine without using keigo, and instead of learning all the weird intricacies of keigo you could go learn something more practical for day-to-day use first (even native Japanese speakers complain about keigo, e.g. use of manual keigo). Teineigo is perfectly sufficient in everyday use. To put it another way, it's a bit like trying to to learn about how to write in the style of a judicial opinion when you're still learning how to talk to someone at the bar.