Men often tolerate GLP-1s with fewer GI side effects and frequently see testosterone rise as fat comes off. Your main risk is complacency — use your easier tolerance to stay consistent and progress your lifts.
Fat loss itself often improves testosterone, so the muscle-first plan is your first and safest lever — do not self-prescribe hormones. On dose-increase weeks, keep loads moderate and form clean rather than testing maxes.
Educational only — not medical advice. Follow your prescribing provider's guidance.