@Count:
For all we know, he might. Although I would say that insuring semantics, Monkey D. could easily mean that Teach has a plan to get what he needs for finding Raftel, but does not have all of the necessary pieces of the puzzle yet to actually start sailing there right now. Just like how he had long-term plans to get the Yami Yami no Mi, the Gura Gura no Mi, Yonko status, and new crewmates.
This is closer to what i meant after a bit I realised I didn't explain it the best. Before Zou and WCI the only way to decipher the 4 would have been Robin which asks the question why didn't the Yonkous go after Robin?
I find on WCI BM is trying to foster that development through Pudding, Kaido conquered Wano looking for answers to Raftel and by extension get the ability to decipher the 4 road stones, so it explains there lack of intreats in Robin.
So if the other two Yonkou seeking the throne have there own way of getting to Raftel (deciphers/knowledge) i can imagine its much of a leap for Teach to have his own way to decipher the Road stones, considering he basically Luffy dark reflection/dark luffy he could have VOAT to get the info he needs which means he needs the 4 Stones along with his love of history. Teach is a planner as evidence by his time on Mobby Dick waiting in the shadows, getting into the Shikibukai, expanding his crew with the level 6 prisoners, killing WB and gaining two DF's and quickly taking over WB territory and defeating his sons and allies to ascend to Yonkou status, but he is not willing to take alot of risks as evidenced by leaving Marineford to avoid Shanks and Akainu.
So like Count Mario said that Teach could have a plan but, the conditions aren't right for him to just spring his plan especially when he can't get at 2 road stones.
Besides him coming out of nowhere to just getting Pudding is to weak for me especially:
-Blackbeard already has setup to deal with another Yonkou ie Shanks and Revs, I don't see him coming into the plot lines with BM or Kaido
-How does Pudding get into contact with BB without BM knowing?
-How does Pudding ever get too BB?
-With the current chapter and some stuff with BM flashbacks, would she really just go be a tool for another person?
-Pudding having yet developed the power
-If its BB approaching Pudding, how does he know about her power?
-BB can't just come to WCI and grab Pudding
-If BM goes down later whos to say the WG just doesn't get her to prevent people from getting her power, why teach?
Sorry if this is off-topic now, but I hope this at least helps from where I'm coming from.