If we remove them from the survey, this leaves us with 75% of 5.33%, which is something around 3.96%.
I think the 5.33% is a bug, 3.96% sounds more realistic and in line with the growth linux was having before.
I think this is an error on the survey. Was anybody able to talk to Valve about this? I forgot which email to send this question to.
I remember the last time I participated in the survey my Fedora system was summarised simply as “Linux 64bit” or something like that.