I am the "former" author. There aren't different opinions, just different translation of one word. Before getting into what that word is let me remind you how did all this go down.
The tent was found tattered, the items inside piled into an ice and snow covered mount. Any account on what was where is not accurate. Next day items are taken out (https://dyatlovpass.com/resources/340/gallery/Dyatlov-pass-1959-search-007.jpg), the tent flatten, small items put into backpacks, blankets and equipment wrapped into the tarpaulin of the tent and everything is dragged to the landings site, and taken to Ivdel airport, thawed and only then journalist Grigoriev takes the first inventory of what's found inside the tent.
https://dyatlovpass.com/grigoriev-2#scan36
For footwear we have ski boots, valenki and the word we have translated differently is "indoor tent boots" - there is no such thing. Grigoriev calls them "комнатные тапочки, которые надеваются в ботинки (https://dyatlovpass.com/resources/340/Grigoriev-notebook-9-36.jpg)" which translates as "indoor slippers that are worn inside boots (https://dyatlovpass.com/grigoriev-2#scan36)"
The official document in the case file is the "Protocol inspection of items found at the scene (https://dyatlovpass.com/case-files-11-20#sheet16)"
Valenki (https://en.wikipedia.org/wiki/Valenki) are worn on their own, not inside the boots. Valenki is what is used inside the tent and in the near vicinity around the tent, like when you go short distance to get logs, keep the fire, they do not have soles. If you are cold you sleep with them. They are a little bulgy so if you are fine with 3 pairs of socks under the blanket you may as well take them off. All of it stays inside the tent - boots, valenki, slippers.
(https://dyatlovpass.com/resources/340/gallery/Krivonischenko-camera-film6-31.jpg)
You can see a dark color valenka behind Tibo who tripped over a saw horse, photo from District 41