I am confused by your comment. I am, in fact, using Timimi on Google Chrome now, with no special json file.
A Chrome popup told me that Timimi was untrusted, and made me click a button in the popup to continue using it, but with the warning that I was taking my life and the future of the Western world into my hands.
Even my original post stated “I was able to force it on again.” My concern is not about my current activity, which is unhindered, but to activity when Google finally decides to block Timimi. You and others are mentioning something about June? So I am assuming you have read something I have not personally seen.
As I stated in a reply above, I will continue to use Timimi until it stops working. When it does, I will evaluate the options I have at this point. So far, TiddlyStow (version 1) seemed the easiest. But there are other options here, or mentioned in other threads, such as TiddlyStow v2.
But thinking about people other than myself, who are coming to TiddlyWiki for the first time, there is a definite value for having a Google-approved app like Timimi for saving changes, with easy and clear instructions on how to set it up, as opposed to making them go into Command Prompt or GitHub, or download something linked to from here, any of which could scare them off because they might see it as complicated and confusing / unapproved / unsafe.
So I would still hope that by the time the day comes when Timimi as it stands will no longer work, that there will exist an updated Timimi or equivalent in the Chrome store.