If you have to disconnect your bowden tube for service reasons, the connector can become difficult to release or in a worse-case situation, not properly grip the tubing. The tubing should hold well enough unless physically damaged.

I have a dual extruder bowden system and old filament or poor quality will sometimes break within the bowden tube. I have to release both ends and clear the section, then put it back together. Even after three years of this, I've not had to replace the connector, but did have to replace a tube after my own ham-fisted actions.