The article note that actual voters probably won’t see much of a difference. The main effect is an even more direct big donor to candidate money pipeline that will mean they’ll have even more influence than they already do.
Plus precedent of course, I imagine it’s usually easier to chip away at campaign finance regulations when you can cite other cases as evidence, but I’m no lawyer.
That’s probably a trend but according to this (sorry dumb paywalled stats site but the relevant bit is in the free overview) as of now Broadcast TV is still the largest political ad market.