When you walk with a child and child crosses a busy road do you let him or you hold his hand?
Why facilitate Google data collection via captcha and java script? Is it a condition for forum to stay open?
Yes we can use macchanger and some public wifi.
In order to get past the first two (one to sign up and one to login the first time), you will need to access the forum via an IP address that is not TOR. If you want to remain anonymous, you will need to find one that will not remain associated with you. If you know what you are doing, this should not be difficult.