Incorrect (recomputes on every reference):

// app/components/user-card.gjs
<template>
  <div class="user-card">
    {{#if (and this.user.isActive (not this.user.isDeleted))}}
      <h3>{{this.user.fullName}}</h3>
      <p>Status: Active</p>
    {{/if}}

    {{#if (and this.user.isActive (not this.user.isDeleted))}}
      <button {{on "click" this.editUser}}>Edit</button>
    {{/if}}

    {{#if (and this.user.isActive (not this.user.isDeleted))}}
      <button {{on "click" this.deleteUser}}>Delete</button>
    {{/if}}
  </div>
</template>