No, this is actually huge for NATO and comparatively a big show of strength. NATO isn't a monolithic military like the US or Russian military. NATO is an alliance spanning the globe and nations from all over the world are participating. The amount of logistics required to pull it off is tremendous and that alone shows what they can do.
If we compare that to the largest "maneuver" Russia held in recent memory, that was the shoring up of their invasion forces in 2018 along the Ukranian border, disguised as a maneuver.
While meat wave tactics will eventually wear down even the staunchest defender, Russia is just as stuck in Ukraine as Ukraine is trying to push out Russia. Ukraine is a single country, not part of an alliance like NATO. While they receive a lot of aid, a lot is still being withheld (think certain long range missile systems, aircraft, etc.). Numbers don't matter all that much against superior logistics and the ability to raze the enemies logistics to the ground.
Remember how columns of supply trucks got obliterated in the first days of the invasion? Russia tried to go for Blitzkrieg but failed hard. If your supply lines are cut, you're done. Doesn't matter how many soldiers you got. Once they are starved of ammunition and food, your army stops being effective at being an army. They can barely keep an army supplied that sits right at their own border, while suffering relatively few strikes at any of their infrastructure within their own borders.
NATO demonstrating that they can coordinate such large numbers and keep supply going, should sufficiently scare the ever living crap out of most opposing military analysts, because that's how you win wars.