How to remove the endless @login_required and @admin_required?

Question

Flask

There is a site on flask with 100500 routes.
And it is necessary to prescribe decorators for routes like a woodpecker.
For example:

@app.route('/userarea/income/')
@login_required
def user_income():
    return render_template("user_index.html")


@app.route('/userarea/income/add/')
@login_required
def user_income_add():
    return render_template("user_index.html")


@app.route('/adminarea/')
@login_required
@admin_required
def admin_firm():  
    return render_template("admin.html")

И т.д.

Question: What's the point of using flask-login if @app.before_request also has the ability to split it into 2-3 lines?
And in principle, what's the point of using flask-login?
When are sessions missing?

@app.before_request
def before_request():
    g.user_id = session.get('user_id', None)
    g.admin_id = session.get('admin_id', None)
    if ((not g.user_id and request.path.startswith('/userarea/')) or
            (not g.admin_id and request.path.startswith('/adminarea/'))):
        return redirect(url_for('login'))

Answer 1

And what's the point of using flask if you're too lazy?
Use django, they have already added middlewares for you.