I can't say I'm shocked. I'm probably one of the biggest VFX critics on this forum as it is something I'm always analyzing and does affect my enjoyment of projects to some degree. Each studio has kind of built up its MO over the years as well. For the MCU in particular, it has been clear their MO has been to shoot as much stuff green screens as possible and then do all the work in post production. While the early years of the MCU had some killer practical effects and suits (see Iron Man 1 and 2), the bigger the universe seemed to expand and the bigger Marvel Studio's plate got, the more the studio has seemingly relied more and more on pure VFX. It has really bothered me and that, along with their tight purse strings for music composers are two or my biggest critiques of the studio.
Now lets compare Marvel Studios to say Lucasfilm. In general, I believe Lucasfilm has been the benchmark in general on producing the perfect blend of both special and practical effects since Disney took them over. To me, you need both to create the perfect blend of verisimilitude, or realness feel to a picture. Critique the movie quality all you want, the visuals have been nothing but spectacular in general at Lucasfilm. Lucasfilm and ILM pioneered the advent of VFX even further here recently with the invention of the Volume, which was first used on The Mandalorian and in a spectacular way. For certain shots, The Volume has taken VFX to another level, but as we are learning recently, due to its size limitations, it can also be overused, which we are also seeing ramifications here recently. Now Lucasfilm, the staple of balancing practical, VFX, and the Volume technology, is suddenly relying WAY TOO MUCH on the Volume, and its detrimental effects are showing up in shows like Book of Boba Fett and Obi-Wan. The volume's benefits are that its cheap once you have it, its quick, and it looks good, which is great for all these Star Wars TV shows to use to some level. HOWEVER, its downfalls are that it is small, you can only fit so much in it, and it can feel small for bigger, more expansive shots with a lot of characters and a lot going on. These expansive shots tend to still look better when using a blend of real-world sets, practical effects and traditional VFX. However, all three of these take more time and cost more money, especially the on-site shooting and practical effects. Thus, its seems like the Volume is starting to become the answer for everything, which isn't exactly good.
Moving back to Marvel Studios, while they haven't talked about it much, it is becoming clear here recently that they too have started to use the Volume in at least all of their shows, if not their movies too. Again, its cheap and easier for these shows, especially as quantity keeps going up, but it doesn't necessarily give you the best quality product for everything. The net effect of all of this to me has been somewhat a homogeneous effect where both Lucasfilm and Marvel Studios are becoming more of the same when it comes to VFX. As volume goes up at both studios, they are both going to rely more and more on what is cheap and easy, and they are going to push their VFX artists to their limits in the process. The trouble is that the product is and already has suffered for it. In fact, some of the more recent episodes of BOTH Obi-Wan and Ms Marvel has given me a few of the worst VFX sequences I've seen in years, much less from either one of these two big studios. Its been borderline embarrassing how bad of few of them have been. Its too bad because I thought early Disney Lucasfilm gave us some of the best blend of everything we've ever seen and I'm not sure things are set up to give us it again.