Isn't the number of bots primarily relevant to advertisers? This article entirely misses why the question is even worth asking.
That said, the question is certainly worth asking beyond the realm of advertising. Media has a significant impact on people and society beyond its profitability.
If those impressions are off by X% due to bots, that's a problem. Especially if as a public company you've declared that issue at 5%, and it's more.
If you pay an advertising company a rate per view and the advertising company charges you knowing that a large percentage of those "views" were fake then you're being ripped off.
If you are advertising just to get an idea out, or for something you have no capacity to measure, sure. You need to know accurate numbers. But if you can track conversions on your end, and conversions are good, does the exact number of real views really matter?