OK, we are testing a separate "Who Quoted Me?" product (which may be compatible with the new PL version) on a small staging site right now. Please do not get your hopes up.
It functions differently, but you'd check it just like you'd view your subscribed forums/threads in your My FlyerTalk tab, so there's nothing new to learn

It was originally developed for Vendors on other sites, who generally use desktops, so that makes sense to me as a small oversight.

I ask this respectfully, but why is it that each time that you guys "upgrade" the site, the user experience becomes worse?

Well for one, I never use the term "upgrade". Each site change is an "update". Because "upgrade" means different things to different stakeholders. Tech values stability and security. Business values ad performance and traffic. Community values UX and features.

The biggest issue we have is that there is essentially zero standardization, even frequently within the travel & leisure department. That's a result of acquiring forum sites for 20 years and attempting to manage expectations for 2 million users. So as we move towards standardized sites, the worst part is of course going to be the bumpy ride to get everything in line. Once that's all set, then we can make tweaks to the vbulletin core.

I also want to say this: Compare 6 or 7 years ago. We'd do a site update and it would take a month or more to iron out all the glaring bugs. But now (thanks to standardization and process changes), feature-removal notwithstanding, the changeovers are much, much smoother.

When will the standardization be completed?

There's no answer to that.
The standardization project is a long-term goal that does not have the urgency or resources to give a specific timeframe. It involves multiple teams from multiple divisions with competing priorities.

I don't think this style of mention, which uses the UTAG function, has ever generated a notification via PM/e-mail or whatever. It used to be possible to use the MENTION function to generate a notification, but that seems to have been disabled recently - whether it was part of this update or some other one, I'm not sure.

Both of these functions could be generated by using the @ symbol and then someone's username, but if you selected the person's name when it popped, it would be a UTAG, whereas if you just typed @[username] and kept going, it would create a MENTION when you posted it.

I can see why one of these duplicative functions was killed off, although I would have preferred it to be MENTION that survived since I liked getting PM/e-mail when I was mentioned.

While it is a different product, we have reinstituted Quote notifications

You can access them from the dropdown or directly in MyFlyerTalk (main page, below your forum subscriptions)
I've already asked for the notification menu to be reorganized so PMs are the top row again.

It works! Two posters quoted me this afternoon! I AM somebody!

This is great news. I see the Who Quoted me at the bottom of all my subscribed forums on the My Flyer Talk page but I dont have anything in the drop down menu, either on the down arrow next to my user name or the bell. Will that come also?

Might need to clear cache/cookies for the site

Thank you.

What dropdown? [update: I found it, or at least I found a dropdown menu, after someone quoted me. On the other hand, when I command-clicked the Quote line to open the quote(s) in a new tab, the page reloaded without showing me any quote and the dropdown vanished.]

I also don't see anything like Your Notifications. However, I do not use dark mode. Would that make any difference? Or am I looking in the wrong place?

Woohoo! Thank you!

I am in

YAYAYAYAYAYAYYAYAYAYAYAYAYAY. Works for mw!