I think this is a very good idea, locking this thread instead of changing the title for a while is the only best thing to prevent spamming replies. OP or moderators is okay to lock this thread for 1 year and by the end of December 2022 then Op opens this thread again so that we can choose the best gambling site in the year 2022. But must be better if Op will lock this thread so that he can open immediately by the end of this year.
I support your suggestions but ops need to take into account the activities that will happen in the gambling industry before opening another thread by one of 2022 if that work for op or better still the thread can be left unlocked to give other members who may have not seen the thread to make they own contributions in the future.