Every time you introduce a tool, you may be creating a dependency for your team and your stakeholders.

For example, if you introduce a Gantt chart or functional programming or ternary logic into your project, then you're essentially making a decision that from now one, everyone who wants to be able to maintain your thing has to know Gantt charts or functional programming or ternary logic. Sure, people are free to learn and adapt but that costs real money so it's generally a trade-off. Introducing tools should be a conscious decision made by the team members, not necessarily by an individual contributor.