Nikon, a leading optics producer, stops making rifle scopes

[friendly_iconoclast]

3. Carl Zeiss, Leica, and Pentax also make rifle scopes, and show no signs of stopping

And a quick Google shows no evidence of pressure on any of them to get out of the rifle scope business.
So yeah, the OP's claim about the actual reason for Nikon's decision is bullshit.

This illustrates an old axiom, and an observation

The most effective propaganda will have a kernel of truth that is spun by the propagandist for their own ends,
whether those ends be a paycheck, or the promotion of a cause (as is the case here).

The paid propagandists/advertisers will generally do a better job of it, as they usually know
how to motivate people and edit copy.

Having a 'true believer' write the material is problematic,
as they tend to write for the occupants of an uncritcal bubble, not a skeptical readership.

In those circles, awkward questions are rarely asked and inconvenient truths are elided.

Instead, the ethos is: If it sounds like it's good for <The Cause>, it's true...or at least I'll pretend it is.
'Higher truths', and all that...

To the outsider, it come across as more than a little cultish- Trumpist propaganda is probably
the most obvious other example.