Does this have english dubbing or english subtitles?

If it's the Blu-ray Remux untouched, then no. It's in Castillan, Catalan, Galician, Valencian, Euskera and Japanese with Castillan subs (optionally). Keep in mind that this isn't actually a HD remaster but a serviceable upscale (better than the Blue Bricks, for whatever that's worth).

What the fuck is the point in doing 6 episode remux releases.

Those interested could just grab it from the BDMV folder uploaded previously. Same thing. However, had it it been a BD ISO that would had made a reason to make Remuxes.

Seeeed Pleeeease. :(