Debunking the "Debunkers" - Russian HIMARS Claims

Attempts to "debunk" Russia's Ministry of Defense's claim that it recently found and struck a US-made Ukrainian HIMARS center on "analysis" of the ministry's accompanying video.

While attempts are made to suggest the HIMARS is "just a truck," it clearly is a HIMARS. Why are people attempting to claim otherwise, just as they did when Russia found and destroyed the first M777 howitzers?

References:

GIMP (opensource image editing software): https://www.gimp.org/
Reuters - Russia says it destroyed two U.S. HIMARS in east Ukraine, Kyiv rejects claim (first 2 HIMARS struck): https://www.reuters.com/world/europe/...
Newsweek - Russia Boasts of Destroying Western Weapons in 'Precision' Missile Strikes (third HIMARS struck): https://www.newsweek.com/russia-destr...