Maybe decades ago, but I find it hard to imagine any recording studio still having an analogue recording process. Sure the different mediums may call for different mastering, but the loudness war wasn't a result of limitations of tapes/CDs.
You're right in that the loudness war wasn't the result of the limitations of the CD format, it was the result of the newfound capability inherent in the format. The "loudness war" was a continual ratcheting up of dynamic range compression, something easily achieved with a digital representation of the intended soundwave.
The manner in which the album is recorded (analog vs. digital) doesn't matter, it's the limitations of the format for which the master is intended. The physical limitation of a needle tracking a groove measured in microns places a hard limit on the amount of compression which can be applied to the dynamic range. You can't make a needle follow the kind of narrow, jagged, shallow groove that would be the result of using a "loudness wars" era master meant for the CD format.
That said, the number of "got to have it" albums which were caught up in the loudness war isn't enormous. The biggest victims were re-releases of classic rock albums during the 90's but the original records with the true mastering are widely available in the used market. While there are some classic albums begging for a vinyl focused remaster, there aren't too many people clamoring for Limp Bizkit's catalogue to be rereleased without all the trickery employed on the CD master. There are also a ton of garbage "vinyl remasters" out there cashing in on the trend. For example vinyl rerelease of the early Modest Mouse catalogue is just garbage. I seriously think they lied about finding the original masters and just took the CD master and added "crackle and pop" on top to mask the obvious half-assing. That or they used the worst pressing supplier on earth.
The loudness war was directly related to CDs becoming popular.
"...because of the limitations of the vinyl format, loudness and compression on a released recording were restricted to make the physical medium playable—restrictions that do not exist on digital media such as CDs—and as a result, increasing loudness levels never reached the significance that they have in the CD era."
