HN comment claims Alphabet operates (profitable) information index

But Alphabet SEC filing discloses its revenue-generating operations are (a) online advertising delivery, (b) cloud-based solutions and (c) sales of other products and services

US law requires the statements in Alphabet's disclosure to be accurate, not misleading

Nothing requires statements in HN comments to be accurate, not misleading

What is "(profitable) information index"

Is it part of (a) online advertising delivery, b) cloud-based solutions or (c) sales of other products and services