At the end of 2023 I think it was closer to 20% of foot print, CF successfully manipulated some media outlets when they reported 90% of FEX and then media assumed it meant 90% of their network.
Source here.
90% of FEX will have XGS-PON by the end of the year.
20% of the addressable footprint will have access to the 2.5Gbps product.
I read that as 2 independent statements. You're assuming if XGS-PON is enabled on a FEX then the 2.5Gbps product should be available.
That's not necessarily how it works. You could be connected to an XGS-PON FEX but not have 2.5Gbps available to you yet. There could be other upgrades needing done before the higher tiers launch.
Kit goes in 1st, products get launched later. There's always a lag between the 2.