The biggest thing turning me off when they email is that to work for Facebook you MUST have a Facebook account. I deleted mine years ago.
How would that work being a new hire at Tesla considering that they probably pay a lot of folks less than is required to own one?
Cars, appliances, housing, fuel & energy, food, etc. Huge, huge swaths of the economy don't require brand loyalty because it's not reasonable to expect.
But in more modern times, there's certainly a general expectation to use your employer's products when it's reasonable to do so even if they're not your preferred options. There are exceptions of course and tech companies are usually more flexible these days.
No it doesn't. Are you familiar with a product called Workplace [0] released in 2016 [1]?
[0] https://www.workplace.com/
[1] https://www.pocket-lint.com/apps/news/facebook/139126-facebo...
They haven't adjusted any of the engagement levers for the workplace tool, so you get so many notifications that they become useless (and the email versions are just teasers to get you to open workplace), you get an out of order "news feed", the groups UI is hard to understand and difficult to search, messenger is enabled in the UI and you can't turn it off, etc.
But yeah, it's Facebook, and it's what they use for everything internally.
It becomes more questionable when that product is on the backend of hundreds of thousands of engineer-hours dedicated to optimizing engagement. Bit like saying "sorry bud, we don't want your chemical engineering talent in our meth shop unless you are a meth addict, surely you understand self-hosting enables us to make a superior product"