Have to agree with Ernie above, any university/college and school will teach the adobe stuff and open software such as wordpress. This is then taken to the workplace where experience/knowledge of adobe software is preffered. Xara/magix/whatever is limited in their marketing - a while back I posted a thread about how xara had missed out on a massive opportunity to grab people forced to leave adobe muse and companies like webflow benefited because they bothered to market their product and were keeping in touch with what is going on.

It doesn't suprise me that the demographic is so high, but I did expect at least some in their 20s.