Yes, the spambot registrations are a continuing issue. Here's the registration attempts (all above 100 tries) yesterday for wxforum.net 485 46.148.234.229 ECO-NET, route object, RU (Altagen CJSC 3 Davydkovskaya street 121352 Moscow RUSSIAN FEDERATION)
448 213.159.38.90 Penki Kontinentai, Ltd., Lithuania
337 178.168.198.11 MTSBY, Mobile TeleSystems JLLC, BY (Belarus)
276 178.184.204.89 OJSC Rostelecom, Russian Federation
204 193.9.114.179 M247-LTD-Brussels, M247 LTD Brussels Infrastructure, BE (1930, Zaventem, Belgium)
165 94.124.78.248 NL-ZOMRO27-20210824, NL (Hengelosestraat 201)
159 188.126.79.30 Portlane Networks AB, Sweden
158 178.184.224.102 OJSC Rostelecom, Russian Federation
130 37.99.74.227 2DAY Telecom LLP, Kazakhstan
125 37.9.156.42 AISTNET, AIST Networks, RU (Russia)
123 109.197.199.22 TELECOMRUNET, JSC Telecom.ru, Ulyanovsk, RU (Ryabikova, 21b, Ulyanovsk, Russia)
114 78.106.234.219 OJSC "Vimpelcom", Russia
114 185.210.142.171 RU-MEGAFON-20170628, Siberian Branch of PJSC MegaFon - Novosibirsk Mobile Clients, RU (Samara)
I guess that Boris hadn't relied on two separate captcha mechanisms for the meteobridge forum, so let in a bunch of robot miscreants and is taking action to suppress in the future. Yep.. the PHPbb site just relies on Google reCaptcha which has been pretty thoroughly broken by the miscreants.