Is it possible to take disciplinary actions against an employee based on his/her post on a general subject in a social media like Facebook or Linkedin?

Is it possible to take disciplinary actions against an employee based on his/her post on a general subject in a social media like Facebook or LinkedIn?

"Now a days work from home is treated as 24x7 office hours.. Its like all are working from homes and are saving a lot of time commuting and this should allow all to put in more time and efforts regardless of working days or weekends..where is this world heading to... Seems employees don't have families or personal life.. Frustrated with Covid life styles. How long this will continue"

This was the post by one of my friend in LinkedIn .He got an email from his manager stating that this is a serious disciplinary issue.

Dear colleague,

As long as any such posting on social media does not tarnish the company's image or cause any monetary loss, I don't believe it will come within the perview of disciplinary action.

Everybody has freedom of speech and in the absence of above rider, his such views can be regarded as given in personal capacity and not as an employee.

Regards,
Vinayak Nagarkar
HR and Employee Relations Consultant