Allegiance and loyalty are synonyms. Both are nouns. They are defined in terms of each other:

loyalty
Word forms: plural loyalties
uncountable noun
Loyalty is the quality of staying firm in your friendship or support for someone or something.
I have sworn an oath of loyalty to the monarchy. [+ to]
This is seen as a reward for the army’s loyalty during a barracks revolt earlier this month.
Synonyms: faithfulness, commitment, devotion, allegiance

allegiance
Word forms: plural allegiances
variable noun
Your allegiance is your support for and loyalty to a particular group, person, or belief.
My allegiance to Kendall and his company ran deep. [+ to]
…a community driven by strong ties and allegiances.
Synonyms: loyalty, duty, obligation, devotion

--Collins COBUILD Advanced Learner’s Dictionary. Copyright © HarperCollins Publishers

True. But I would be shocked — shocked, I say! — at a person who has FB but not a phone, email, nor postal address.

TIL. I haven’t been on Facebook in so many years that I didn’t know this. Still, given how many good alternatives are out there, it doesn’t seem like a good reason to keep using Facebook.

Facebook has cross platform video calls?

We’re going to have to disagree about allegiance being a behavioral motivator since means a strong feeling of support. That seems impossible to express in any way except motivated action.

People who want something from you for less than it is worth will try to convince you that loyalty is something you owe them or that they have earned from you

On this we totally agree. It’s bullshit.

Not in my experience. Anyone I need to talk to has a phone. Everyone else has email or snail mail. Simple.

But YMMV.

Leaving Facebook has likely never made anyone’s life harder.

I’m not sure that I completely understand your point, but I totally agree that loyalty is earned and not automatic. And it can be used against you to coerce acting against your own best interests. I keep running into this with my employer, despite mountains of evidence over the years.

I’m a slow learner.

It is. Especially if it catches you off-guard. Hang in there.

Loyalty is vastly overrated. The only rational course of action is to complete exactly the tasks to which you’ve agreed for the wage they’ve determined. Your employer will demand loyalty but never reciprocate. Don’t let them manipulate you.

Also, never ever let them see you sweat. It doesn’t matter how good your employer is, at the first hint that you’re insecure, they’ll pounce and you’ll be treated like garbage. Always have your briefcase packed and a box to clear out your desk on a moment’s notice.

My last ones are from Zenni. No complaints.

In fairness, my optometrist has reasonable prices and good selection. And I’ve had good luck at Walmart in the past.

I have a dozen or so AA (at least 10? 15? years old) and four AAA. They hold a charge very well, and are easy to charge from a solar panel when needed. They’ll top up a phone during a blackout or a camping trip. They get used in flashlights, controllers, remotes, shavers, etc.

I keep a box of alkaline batteries in various sizes on hand for guests, but it’s hard to beat NiMH and NiCad rechargeables.