Per wikipedia [1], it was rival factions of Visigoths, that the Moors expertly divide and conquered. I'm sure otherwise you are correct, and with the minor exception of enslaving the locals, the Moors were able to build a bright example or progress and science and tolerance on the land and backs of those backwards savages, sorry, barbarians.
> The popular thought in Spain on “invasion”
Could you explain the scare quotes? https://en.wikipedia.org/wiki/Muslim_conquest_of_Spain doesn't shy from using "invasion" without scare quotes throughout the text. Passages like
During one of the multiple raids in 710, the Muslims "made several inroads into the mainland, which produced a rich spoil and several captives, who were so handsome that Musa and his companions had never seen the like of them". The natives of Hispania viewed the Berbers in a similar way as the Byzantines viewed the Arabs, as barbarians, and feared an attack by them.
(From [2] we can infer the likely fate of these captives) sure seem to describe a plain invasion to me, no scare quotes needed. It also doesn't look like the people welcoming the Moors as liberators, as you tried to paint them. But perhaps you know something I don't - history is not my forte.
[1] https://en.wikipedia.org/wiki/Tariq_ibn_Ziyad
[2] The harem could contain thousands of slave concubines; the harem of Abd al-Rahman I consisted of 6,300 women. They were appreciated for their light skin. [presumably not all the slave women ended up somewhere as comfortable as an imperial harem, but wikipedia is very economical in describing that aspect of Al Andalus] - https://en.wikipedia.org/wiki/Slavery_in_Spain#Slavery_in_Al...