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You're entitled to your opinion. It happens to differ from mine.
I'd still appreciate an answer from Avast to my post since that post was directed to Avast.
This is not about opinion. I just explained in simpler term what is HTTPS scanning. Some people misunderstand the term thinking turning off HTTPS scanning means Avast won't block known malicious HTTPS sites, which is not correct.
Your comment about "Some people misunderstand the term", well that is a guess, but even then they need to be warned abut that potential risk.
Your simpler terms aren't that clarifying. If you want to go down the malicious sites route, then all you really need is the Avast Online & Security browser extension as that has all of the same malicious web site detections as the AV (Web Shield).
The problem is expounded in sites that have many 3rd party URL links, none of which are being opened as such so malicious site checks wouldn't be done by either the AV os the AOS browser extension.
So there is risk, the sooner any malware is detected the greater the chance of it not getting to your system.
I already briefly explained the limitation in my first comment. Check again. My assumption is an appropriate one because most people don't know what HTTPS scanning is. The name itself isn't obvious enough. Keep in mind, most people aren't tech-savvy.
Avast's extension is bloated, so I wouldn't recommend that to anyone. It used to slow down webpage loading also. Don't know if that has improved. Besides, I see that after installing Avast, they don't offer you to install the extension anymore. It didn't offer me at least and I've installed Avast for testing multiple times. Or, are they offering it to Avast One's customer only? You may know about it.
Also, as I said in my other comment, Avast can block third party connection even without HTTPS scanning enabled. Avast's web shield is capable of doing that just fine. A browser extension that can also block third party connection is "McAfee WebAdvisor" (available in Chrome and Edge Store, but sadly not on Firefox). I haven't found any other extension yet that can do it.
Scripts loaded by a browser can't be analyzed without HTTPS inspection. If a website "A.com" also connects to a malicious third party domain "B.com" then Avast can detect that without the help of HTTPS scanning. But if "A.com" loads a malicious script "A.com/malware.js" then Avast can't detect it without HTTPS scanning. So, HTTPS scanning is useful in this scenario.
Hope this further clarifies it. I'm not saying HTTPS scanning isn't needed. It's an added security feature (though has some downsides too including some security and privacy concern). HTTPS scanning is also known as HTTPS inspection/SSL inspection/SSL scanning/etc.