Did they state the customers' equipment need to support this speed too? If not then it is misleading.
Already got 1 user here asking why cannot get 2.5gbps. Expect more to ask such questions.
As per my understanding, the 1Gbps, 2.5Gbps, or 10Gbps are bandwidth speed capacities rather than single-device speeds. They did not sell it as a single device capable of achieving those speeds. Two users can concurrently use separate 1Gbps LAN connections and saturate the 2.5Gbps connection together.
If we look at the exact marketing wording, one of the 10Gbps ISPs markets it as "an ultra-smooth and reliable connection for 4+ users and devices". It didn't say a single device will hit 10Gbps.
In reality, and taking into account the current stage of development, other than speed testing with the servers (assuming they can take those speeds), no single productive activity is capable of using the full 2.5Gbps or 1Gbps speed. Can we download YouTube videos and files from OneDrive, Google Drive, etc., at those 2.5Gbps speeds?