Yes its really true. The prestige shop is open 24/7 so if you have tokens you can buy right at level 1.
And also fourzertwo confirmed on twitter you can unlock any gun,perk,equipment and it will stay with you through every prestige.
For perks you do not get pro version though.
And there is nothing bad about it people will eventually get the high level guns.
I know that I will be getting either the ACR or AK47 or AK47u when I start