I don’t think it’s too unlikely. He is friends with belle Delphine and has often copied her marketing methods, probably even looks up to her. And the dildo blowjob was already so much more than just doing lewd lingerie photos.
Also I think f1nn isn’t in a healthy mental state and he seems obsessed with being hot/desired and slutty for the camera.
If he wouldn’t date Ashley, I’d tend more towards your view but with Ashley literally living with him, the step to film and release a hardcore pornographic scene is just so close & near by. Then add Ashley having her own followers/fans that will always ask for more of her (previously put out) hardcore scenes..
Belle Delphine walked so F1nn5ter could swim.. or whatever the saying is :)