Downleveled by Uber

I recently got an offer from Uber that is a downlevel. I told the recruiter I wanted to interview for a senior role, having over 8 years of experience. Then the actual interview came around and I didnt pay much attention to the fact that the position I was interviewing for said Backend Engineer (not Senior Backend Engineer). So the offer comes in and its a level 4 as I suspected. There was mixed feedback in the interview panel, with some interviewers recommending me for level 5. I go back and forth with the recruiter, and they are able to set up another interview with a hiring manager. But unfortunately, that manager did not recommend level 5. I think my best course of action here is to respectfully decline the offer. Based on what ive read on blind, the recent trend at Uber has been to uplevel engineers so the tc can match their competing offers, so Im guessing they are either downleveling now, or I simply bombed that interview. Hypothetical worst case but likely scenario here: I take the L4 offer, dont get promoted because Uber is sinking, get laid off in six months. Then other companies use my level at Uber as the source of truth and I beat myself up for accepting a downlevel. The green Uber juice just isnt worth the squeeze.