It means two things:
In high-quality manufacturing, producing to tolerance means that all the parts are as identical as possible. Getting the tolerances precise permits cars to be made more reliably, and for production to run more effectively.
In human beings, tolerance creates resilience. Tolerance of different abilities and preferences makes it easy to work with diversity of thought and approach and expertise, enabling better outcomes.
Tolerance doesn’t mean permitting behavior that undermines the community. In fact, it requires that we put the community first. Instead, it’s a willingness to focus on contribution instead of compliance.
We need to choose wisely. Are we working with machined parts or with people?