Take the Air China logo - if a not-so-bright reader might think you are Air China, you're using this all wrong. But if you use an Air China logo to signify the routes actually flown by Air China on a free world map of international flights on your web site, well, yeah, that's Air China, nobody is misled, even a moron knows the little logos on your map of the world aren't actually jet aeroplanes.
Years ago someone contacted me at the company I worked for claiming in some sorta pseudo legal language that we couldn't have one of our competitor's logos on our website. We had it on a promotional page comparing features across similar products.
Turns out we can do that in the US.
Yes, there are ways someone could use them that would not only run afoul of the trademark, but have trademark holders come after them. However, that doesn't make this useless, because there are proper and gray-area uses of these as well.
Seems fine
Having said that, I'm not sure even that is legally necessary.
Businesses may often not really understand what’s going on and default to being worried about third-party use of their trademarks that they normally must defend. Perhaps they don’t need to worry in this case, where it may actually provide a bit of free advertisement, but if there’s no one on the other side then it wouldn’t help the case.
IANAL
If someone uses them in a context that's actually problematic for the brand, the brand can still sue them then. But that won't be the common case.
If you see the official logo it has different colors than the one provided in the website, so you can't that for production use cases.
Using them is the problematic part.
How many infringements do you generate by just loading the front page?
[1] Those most exposed to Hollywood lobbying.