Is this guide for using vacuum traction device on uncut penis legitimate?

Can someone confirm this is legit?

Why do you need to tape over your glans if you are using a silicon glans cap anyway?


05.10.2018: NBEL 15.5cm (6.1 inch), NBEG 14cm (5.5 inches), BPEL 18.5 (7.28 inch).

Extending via penimaster 2h-4h a day.

Goal: NBEL 8x6 inches