I've no reason to doubt this particular video - but I'd exercise caution with some of Mark Felton's other stuff. His work falls very much into the "enthusiast" category which in itself isn't bad, but he takes at face value some dubious claims and seems to have a problem adequately covering certain aspects of his topic.
I refer specifically to a video covering a Tiger claiming 50 kills at Kursk (which without rock solid corroboration from Soviet accounting of losses should be treated with the caution one would accord commando comics!) and his coverage of the assault of the Reichstag, where the German side is well covered whilst the Soviets are described in very general terms. It's fine to cover one side or other, but actually cover stuff properly if you're going to do (relatively) popular videos on the internet.