Usually i don't take these price predictions seriously. Most of them are just to create people's attention and to create hopium among the holders and investors. I often heard Standard Chartered bank making such bold predictions and other famous personalities too coming on the media telling high targets for bitcoin for this year.
True. It's probably just trying to take people's attention and to make people's keep buying at high rates. It's not only Robert Kiyosaki, there are many other popular names who did the same way. It is actually not surprising because this also happened in the previous season where many popular names who predicted the price of Bitcoin to be above $100k. But at the end of the bullrun season, $100k was never reached. Since we understand this, it won't be affected too much for us. This only can influence those beginners who still don't really know Bitcoin and crypto space.Yes Bitcoin may reach 250K or beyond but i do not think that will happen in this cycle. For me, even we stretch to maximum we can see 150-160K bitcoin price. I may be wrong but the price usually never reach to the point where majority of the people think it would reach.
Bitcoin can be around $250K but it is true that it seems unlikely to happen in this cycle. The current price is too far from $250k, it is just nonsense if there is someone who believes in that prediction. 
Yep, $150k can be said still realistic possible peak price of Bitcoin. However, I personally only believe that Bitcoin optimally can be around $125k-$130k in this year.