Actually a really great idea perhaps.
In the HR space there is definitely a place for pseudonomous feedback/issue raising. Not anonymous where a disgruntled employee can raise 10 separate issues and appear as 10 disgruntled employees.
Not sure how your idea would work in practice but letting the employee choose a "ticket" sounds like a nice concept.
1. A set of questions is created on which the employer would love to get answers to from employees.
2. If a company has 100 employees, 100 unique tickets are printed out on a piece of paper (it could contain a qr code which leads to the survey)
3. All paper tickets are placed in a bowl at the reception and employees are able to take a ticket each
4. Employee goes home, uses their phone to scan the QR code and fills out the survey, ensuring total anonymity. Each ticket has a unique ID, ensuring only one response per ticket. The empployer can not possibly know which ticket was taken from the bowl by which employee.
5. The results are in, and employers get 100% anonymous but 100% honest responses.
That said, it's still frequently obvious due to people's writing styles, the nature of their complaints, timing.
The decision for us to house the whole interaction within SMS was also a response to links in SMS getting much sketchier to click. Emoji responses are more expensive to run, but they're smoother to work with and more useful for team feedback.
While many managers won't do it, usually it's an innocuous thing like being able to move employees between teams and see where data moves that give things away. Not saying that's what's happening in OfficeVibe at all, but it's a common fault.
Writing styles and people exposing themselves is definitely an issue. One commenter here had a great idea on rephrasing through ChatGPT or similar to mitigate that issue.