In order to be too good to go down, you have to be good in the first place.
Last season's late run was a mirage conjured by a combination of Olise's genius, playing a series of poor or already on the beach teams, and a healthy dose of luck (eg the Liverpool game).
The reality is we are not that good at all and have worsened since that fortunate run. There's no doubt in my mind we'll be relegated, having rode our luck for too long, and as the poster above notes, not improved in the way that our peers have.
Look on the bright side, we managed 12 years in the top flight plus a cup final, nobody would've seen that back in 2013.