An AthlosID is not a profile page. It is the small set of facts that everything else in sport hangs off, kept in one place and owned by the person they describe.
The same person can be an athlete at one club, the parent of an athlete at another, the volunteer who films events at the weekend, and the client of an independent coach. Roles open and close over time. None of that needs a second account, and changing role does not mean losing what came before.
Athlete · Coach · Parent · Physiotherapist · Streamer · Club admin · Analyst · Researcher
The word coach on its own says nothing. Each link records the sport, the team, the dates, whether it is active, and what it allows.
Qualifications, federation registrations and club affiliations, confirmed by the organization that issued them rather than typed into a form.
Access is granted per person and per purpose, with a record of who granted it and when. It can be withdrawn.
Change club, coach or country and the record follows you. You can take a copy of it with you at any point.