For a Scrum Master, it is important to understand the pulse of the team. If there’s a member in your team who takes the meetings as useless, it’s time to know why he/she is adopting such a behavior. The focus should be on the behavior rather than the individual, the Scrum Master should try to talk to the team member individually by asking open-ended questions to find out the reason for not attending the meeting. Certainly, there is a need to understand the cause of this behavior and try to explain the importance of the planning meeting (Scrum ceremonies).
In Scrum, each individual is important, it is like wheels of a truck, any wheel gets dealigned or malfunctioned, the complete vehicle suffers. Hence, the need to explain the impact of not having his presence in the planning meeting and its impact on the entire team arises. Even the team can start to feel this imbalance. If it is still not resolved, the Scrum Master can set up a meeting with his reporting manager to talk about the concern and look out for ways to help the team member and the team.