From January 30th, 2019 to November 12th, 2021, 50% user give 5-star rating, 50% user give 2-star rating. for CheckMyHTTPS chrome extension.
Installed on my Laptop since I use it out with public hotspots. Works well. (12/11/2021)
Requires installing Python, which a user who is likely to be subject to SSL MITM attacks (for example in the workplace) is also likely not going to have administrative permissions or the ability to install it. The addon should be completely self-contained and not require elevated user privileges to install.