It's absolutely still feasible. But you are right to have some uncertainty. Tier 1 Markets are especially tough with the increased cost of money.
But a silver lining of increased rates, no matter the prevailing market conditions, trends, backdrop, etc. is decreased demand. I used to be unable to review an off-market deal let alone underwrite it because someone else had already wired the EMD before I opened up excel. In most areas, this is less so the case. And I'm relieved.
But it is harder to justify a BRRRR than a flip when you're using raised capital for acquisition or Reno (let alone acquisition and Reno). The capital isn't as cheap and the spreads aren't wide enough. And, unlike in the past 2 years, you're far less likely to have the market / an appraiser bail you out for a project that went over budget or beyond the estimated timeline.
I'm approaching all my properties as flips with a more generally appealing design aspect so that if I do choose to BRRRR - I don't end up regretting granite countertops, french tiles etc.
A good BRRRR is always a good flip. But, a good flip is not always a good BRRRR. Be ready to do either.