I Don't think that anyone is permanent banned for spamming, maybe you get only temp ban for spamming
1 CryptoToxicAvenger 2,770 Full Member 8/26/2014 9:48:53 PM 4 days ago 20 hours ago
2 cheddur_announce 922 Newbie 11/22/2017 7:41:18 PM 32 days ago 2 days ago
3 John.Verdon761232 654 Copper Member 11/17/2017 2:14:36 PM 47 days ago 2 days ago
4 CoinRanker 577 Jr. Member 1/10/2018 8:15:50 PM 65 days ago 6 days ago
5 crypt0next 564 Newbie 2/4/2018 8:19:15 AM 135 days ago 7 days ago
We have people whit over 2k deleted messages and no ban.
Source:
https://bpip.org/report.aspx?r=postsdeleted