No, abandoning an audience is not profitable, hence the audience is being covertly liquidated for maximum revenue.
"Liquidate means to convert assets into cash or cash equivalents by selling them on the open market. Liquidate is also a term used in bankruptcy procedures in which an entity chooses or is forced by a legal judgment or contract to turn assets into a "liquid" form (cash). In finance, an asset is an item that has value."
https://www.investopedia.com/terms/l/liquidate.asp
PC gamers are still assets; however, the Mobile gamers are more profitable today, therefore these assets (PC gamers) are being rapidly liquefied for hwhatever hard cash they have left...this includes intentionally using previously trusted franchises and IP's, such as Fallout, and deceiving that audience into giving them money, knowing that their audience will be upset and never buy from them again.
In other words, yes, they made an active decision to release a terrible game (next to zero production costs) in order to liquidate their Fallout audience (assets). Mark my words that they also have no intention of making another Fallout game ever again. They decided to liquidate the entire franchise and its assets (the customers/audience of the fallout series are assets).
Obviously they're not going to announce this, admit to this or brag about it, since that would destroy their entire reputation as a company. I still have every reason to believe that Elder Scrolls 6 will be a great game since there is no reason to liquidate that franchise as of 2019. Bethesda is/was done with Fallout. End of story. The assets (customers/fanbase/audience/etc) were liquidated.