So my IVA application was granted.Not sure if I feel happy, relieved, disappointed in myself

I’m part of a group on Facebook who seem to be against IVAs.It really worries me that I have made the wrong decision.
Some of the comments on someone’s post goes like this:
‘Ivas are not recommended as they plunge you into further turmoil’
‘IVA's are not recommended, they often increase the payments, and extend the length. Sone of the debts you have included may be to debt purchasers or possibly statute barred. Did you not apply to your suppliers trust fund for help with the bill?’
How can an IVA plunge you into further turmoil??
Does the length really get extended?