No, you'd only need temple flaps if your hairline went lower than this & straighter than this.

You obviously workout, so think of it terms of building up your arms.
The more you build your biceps, the more you need to build your triceps, to keep the overall look balanced.

In this case your 'biceps' depleted (ie your front hairline thinned and receded) and you're building them up to match your triceps (your temple hair), but if you go further, then you need to start building both to keep the balance.