I can - sort of - confirm they are not trying hard. Last time I tried to advertise on Reddit, I failed because they could not accept CC payments from mainland Europe ... Just think of all the ad revenue they are losing.
If you advertise on Reddit, you're advertising to a violently anti-corporate anti-advertising audience, who may love you, but very well may hate you. You could be subject to a witch hunt at the drop of a hat.
I very much doubt advertisers would be lining up to advertise to that crowd. They're hardly big spenders either.