FYI using the same password everywhere is considered very bad practice. Announcing it on the internet might be worse. One site gets hacked and they get access to many of your accounts.
If you don't want to deal with remembering complex passwords there are tools like LastPass or KeePass to handle it (and auto fill sites/applications for you). I'm wondering if the forum owners got hacked and chose not to disclose to us. Obviously
https://haveibeenpwned.com doesn't have it, but I can't see a mass email reset for another reason. On a different note making complex passwords can be easy, open a book choose a chapter and use its chapter title and page number/first sentence and give the book name as a hint. A sentence can often satisfy requirements or theres generators online that'll make a pronounceable password that meets complexity reqs you set
I'l agree announcing the change from an email ending in a different URL than the forum and having a plaintext password in email vs it set to force a change on next login were poor ideas.
Now can someone trade me some cold weather or rain for 102 and sunny?