Idk about the high part, but it is actually common among people my age (Zeke's a few years younger than I am) to live stream playing video games. Believe it or not, you can actually make a fair amount of side money doing that. If you're good enough at a video game on Twitch, you can actually become a pro-gamer and make some significant money in doing so. Esports is a surprisingly lucrative sports market. Those and international game tournaments make crazy money and are crazy competitive. Zeke would have the competitive streak for it being an NFL player. Plus, streaming and watching game streaming is very fun, especially if the streamer is entertaining, which Zeke is.
I have a few friends in the fandom that actually make more streaming gameplay than they do their current jobs, and they have jobs that pay well. Also, depending on how lucrative your streams are and/or your patrons are, you can actually get invited as a guest of honor and/or a panelist to cons. In Zeke's case, it'd likely be a comic convention like Comic-Con in San Diego where they have a lot of gaming panels according to furries I know that go to Comic-Con. Someone of Zeke's status should have no problem adding to his bank account with what streaming on Twitch or YouTube can provide. Some of it is from advertisements (which Zeke would do probably), and some of it is from Patrons. I am planning on becoming a YouTuber whenever I get my suit in, so this is all info I have learned from other furries that I know that are big on both of these platforms.