After reading the article (a bit of a slog), it's pretty one sided and sounds like it's from a rabid fan rather than something done with objectivity. :(

Then there's this:

    The author of this article had the privilege of flying the MiG-31 BM, Tail
    Number 903, on 28 May 1999. The flight was made at the Sokol Aircraft Plant
    in Nizhnie Novgorod, 400 km east of Moscow.

Yeah, fanboy article. Not an objective analysis in the slightest. :(