If I can call the outbound track of the teardrop entry the "gate", since the gate is also 30 degrees, unless varied by wind.
Now this is interesting, that it says to make good a track 30 degrees from the inbound axis.
We know that we vary the outbound track, go wide etc. to roll out on the inbound track when flying the hold. This means the holding area etc. accommodates a varying outbound track. With this in mind, it makes sense to fly the approximate gate for teardrop entry...
The logic to why we dont want to overshoot the inbound in a hold, should still hold true for turning inbound from a teardrop entry.