I did. Why?
Still more modern than updated Leopard 1's and M60's that some places keep as reserves, and with upgrade potential on top of that.
Even year wise, not much different from many countries using their Leopard 2's in the A4 variant, which dates back to 1985, often as their good model rather than reserve.
I would have counted them as reserve, not primary, as they are absolutely not modern front-line tanks. The fact that some nations still use even more obsolete tanks because that's all they have and/or can afford doesn't change that, and it does substantially change the number counts for what one would consider reasonable/expected military sizes.
United States (Army): ~150 M1A2 SEP v3 + ~ 1,600 M1A2 SEP v2 + ~750 M1A1SA, plus ~4000 reserve M1A1 and M1A2.
Poland: 250 M1A2 SEPv3 + 250 Leopard 2PL active duty, reserve was 200+ T-72 but these are being 'traded' to Ukraine for ~100 M1A1 Abrams.
France: 222 active duty LeClerc + 184 reserve LeClerc.
Germany: ~200 active duty Leopard 2 + ~100 Leopard currently under repair/refit. Intent is to upgrade all 300 active Leopard to a mix of A6 and A7 configuration by 2026.