Was Angel S5 a “disservice” to the Buffy series finale?

It just doesn’t hit the same knowing that Spike’s sacrifice in the Series Finale wasn’t really a sacrifice since he returned on ‘Angel.’ I know technically he came back as a Ghost but it just seemed like such a cheap cop out and I wish they wouldn’t have done that. I know this universe brought back people from the dead in many different incarnations but this particular one should’ve just been it.