I am not really saying there is a production issue or not. I am saying that if there is it is not obvious (unlike you and some others are asserting), that I and others cannot hear it, and that I think it's strange that those of us who just enjoy listening without hearing issues are the ones described as having a problem!Trust me mate, I spend hours every day listening to music. It is true that all albums, even the wqell produced ones, lose some clarity on the streming platforms. If you try to correlate the sound of Senjutsu to e.g. KK's album the difference is huge, both on youtube and Spotify. If you just listen to the Maiden albums after 1992 it is not evident but comparing with other mainstream metal releases the sound is worlds apart.
For what it is worth I also listen to a lot of modern music and I would take Maidens sound over most of them for the sole reason that I can hear the bass.