OK, I will explain my perspective. You (and whatever media you consume) can feel free to disagree.
Note: the "impersonation" I was referring to was not check mark impersonation (that is clearly new) but the ability to have accounts that appear to be from other people (thus the need for so many "theReal..." celebrity accounts)
Twitter started in 2006, but did not really become big until 08-10. It went public in late 2013 (so no way to know it's finances before that almost certain very negative, but that is understandable). From an analysis of the IPO:
Revenue: Twitter generates almost all its revenue from advertising, through products like promoted tweets and promoted trending topics. The company has generated $422 million in revenue so far in 2013, and is expected to generate almost $1 billion in revenue next year.
Profits: Twitter has none. The company posted a net loss of $134 million in the first nine months of 2013. Analysts don’t anticipate profits from Twitter until 2015, according to Bloomberg. This makes the company’s IPO markedly different from those of Google and Facebook, two companies that were already profitable when they went public.
https://business.time.com/2013/11/07/live-updates-twitter-goes-public/
As you can see from the profit chart below, that clearly did not happen (.5 billion loss in 2015!). Ah, but 2018 and 2019, those where banner years clearly. A lot of that seems to be the result of one man.... and it wasn't the CEO of twitter lets just say, and most will say it was not a "positive" development (essentially why they made money of course). Obviously a huge dive in 2020 (almost erasing the previous 2 years). 2020 should have been a good year with everyone stuck on their computer and phone, but, that one man was no longer there.... 2021, it appears to be on it's old, loosing, trend.
As noted above, Twitter primary revenue is advertising, much like a newspaper. The reason they can sell adds is because they tell advertiser those add will be seen by X number of people (being able to target more then a paper I am sure). Well, if it is discovered that an number of those "subscribers" don't actually exists, that will change the math and certainly affect the confidence advertisers have. I don't know exactly when the bots/fake accounts thing reached prominence, but it's clearly an issue that is of great concern for an advertising / subscription based business.
It seems like a low overhead business. I mean, they don't really create much of anything other then some form of data software. I can only guess they must have very high internal expenses. I am sure some of that is at least a lot of content monitoring.
Add to that the attempts at political manipulation both as part of the user (bot) base as well as from within the company. Hard to say what effect that has on profit, but it degrades general confidence.
Stack on top of that the general social / psychological damage social media has done and actively amplified for profit. Probably not a huge business hit, but I personally am not a fan of that.
You may feel it's a great business model to invest in, but I do not. I think it's crap, as a business and a "public service"
https://www.netcials.com/financial-net-profit-year-quarter-usa/1418091-TWITTER-INC/