Review Detail of Spelloyal in Thomas Prest: A Simple Magician

I'll be honest here, reading is interesting, but if we analyze the story as a whole we will see several problems like the fact that the story barely progresses. In 94 chapters the MC has barely left the house, let alone been involved with Marvel history or DxD except for a few minor interactions and a single major commercial interaction (it's hard to say much without giving spoilers). We are in chapter 94 and only now the MC seems to have passed the "tutorial" phase and started to get personally involved with the world, the problem is that this involvement was not with any of the previously presented universes, but with a new one that suddenly appeared in the crossover . The MC barely got involved with the two worlds presented at the beginning of the story and now he's suddenly fully involved in a new addition to the crossover, an addition that by the way was very poorly done devaluing the Harry Potter Wizards as a faction in the DxD universe . The author said in the story that an adult Wizard is a middle-class being and doesn't seem to realize how strong this makes the Wizards faction. High Class beings are rare elites in the world of DxD. If we stop to calculate, the high-class Devils who control the underworld would not have more than 200 high-class beings counting all 32 pillars. A faction with tens of thousands of middle-class beings and a few upper-class ones would basically be the strongest faction other than the god-controlled mythological ones. Another problem is that the addition of the Harry Potter universe makes it impossible for Shield to be unaware of the occult supernatural and consequently makes it impossible for them not to know about things like wizards, gods, angels and devils which makes the whole story prior to the addition of HP a large Plot Hole that can only be forced filled. Finally, the biggest problem is that the author seems to have only chosen franchises that he doesn't like for the crossover, as the MC keeps complaining and badmouthing the characters of these franchises whenever he has an opportunity. Recently we had like 8 chapters of info dump from the MC just badmouthing HP and Wizards. I understand badmouthing this society specifically, but the MC does it and the author renders almost all the good points of this universe useless with the excuse being that Wizards' magic is incompatible with other species and then the MC decides to get heavily involved with them when that was completely unnecessary even to protect his cousin. The author seems to have come up at the last minute with the idea of ​​adding the HP universe to his fanfic and didn't know how to add this universe in a way that would add something to the story, resulting in something that seems to be basically a filler arc before the main story even progresses .