Whatever your opinion about these two coins, I think it's fine, because only you can decide to buy these two coins or not. Doge started as a joke Coin Coin, but escalated after Elon Musk tweeted about this coin. As long as influential people are still in it, the coin will continue to advance
So how long will this influencial people keep hyping this shitty tokens? And if they stop the hype what would be the fate of investors? We all saw the crazy pump of safemoon, how is it fairing today? I think it's type we face reality, these tokens are just for making short term profit and so bad most people might get in late and loose funds, so it did be better to invest in an institutional coin which got good use cases and solves some problems in the Ecosystem, tokens like $Fida, $Flm, $Ref, $Near (my best alt), $Oct.
Invest in long term, in the future you will be proud of the step you took
Meme coins will never be good for long term as they eventually break out and dump after the hype will be over. So why take the risk investing in them in the first place? Although i understand how some investors get profits from them even for a short term, but IMO time is very precious so why not invest earlier in those well established coins and have real use cases, so that if those coins will reach their ATH, we will gain huge profits for sure.
I don't see Shiba and Dogecoin as good investments so i don't think investing in them is a good idea. Good luck for all those who believed in them, it will be a win-lose scenario in the end.