lack of audience, as in lack of live viewers in LAN events?
I think that's a non-issue, tbh. Since it's a riot-hosted and produced event they'd much rather ensure safety standards are met rather than possibly risking PR. Especially since multiple players got covid in Champs, despite being quarantined.
Either way, that should (hopefully) no longer be an issue later this year, or next year at the most.
Larger third-party events are already confirmed to be encouraged and possibly even supported in the last quarter of this year, too. The argument still exists that these events will not feature the best teams due to a lack of VCT-related incentives, but I think it will be balanced by teams making roster moves wanting to gain experience in the now extended "off-season".
I can't speak for the casuals' awareness. Compared to esports-heavy titles like LoL, DOTA, or CS, I think the percent of casual players who care about the competitive side is definitely lower, but that's a result of the game's recency. The champs music video has like 25 MIL views, so I imagine many players are at least aware of it, but don't care to watch it.
If anything, increased viewership numbers across the board really only indicate steady growth for the scene. NA,EU, and APAC have all had 100k+ peaks, which is a massive improvement over this time last year when only NA had those peaks.