I read the co-founder's comment as the whole company having 1000 employees (Wikipedia confirms this) and the vast majority serving the core functionality in one way or the other.

Without Sales, Ops, etc. I imagine the number of core functionality devs to be 100-300.

That would make more sense.

They have a calculator on their website [0] to compare your wealth ranking in the world with and without donating 10%. I believe for many people in IT it barely makes a difference (whereas for the recipients it's oftentimes life-changing).

[0] https://www.givingwhatwecan.org/#how-rich-am-i

And if you cannot donate money, you might be able to donate time and work if you have spare.

The post mentions they plan to add this to Watchtower [0], which can be enabled for non-subscription accounts as well.

[0] https://support.1password.com/watchtower/

From here [1] in case anyone is wondering. There is an option for "local" vaults in the advanced settings.

[1] https://agilebits.com/store

For how long? The writing is in the wall. Will next version support it, after it has given "ample time" to move to the subscription model? This version is already under a time-delay popup.

It does not neccessarily imply mastery in all layers of the stack but rather familiarity and often the skills to understand and fix bugs in other areas other than your field of expertise.