encryption would prevent the modem from seeing it when someone sends it, but such a short string will inevitably appear once in a while in ciphertext too. so, it would actually make it disconnect at random times instead :)
(edit: actually at seven bytes i guess it would only occur once in every 72PB on average…)
By “solar power in operation” (in GW) i think they mean maximum output capacity rather than actual production, since these numbers add up to 923 GW while wikipedia says in 2024 there was 2.13 petawatt-hours (243 GW on average) actually produced by solar.