It is what it is.
Sign Brown as a stopgap this year, and target OT in the first round of the 2023 draft.
There's no "good news" to an injury like this, but it is better that this injury happens now than in Week 1. It gives us more time to replace him, and bring in a guy like Brown.
It will also be fascinating to see what this does with Fant. On one hand, Fant has more leverage as the only trustworthy tackle on the roster. On the other hand, if the long-term plan is 1st-round OT in 2023, then it could make sense to bring Fant back on a franchise tag, bring Becton back, and have the 2 compete with the rookie for the 2 spots. Especially if Fant wants more money than the Jets are willing to give.