Personally I found the shuffles with the API a huge pain. I have a small bot and I previously just used a command line client to post my automated tweets.

With the API changes and new keys those clients all stopped working and the maintainers were uninterested in fixing them.

So now I have to implement oauth myself. Which as a busy person and poor programmer is a significant amount of work.

I went with paying IFTT a few dollars per month for now (because their API just lets me use a bearer key) but I suspect people/organisations that don't prioritize twitter won't bother.

Edit: I just checked an it looks like there might be some wrappers around the twitter interface now (twurl and twitter-api-client look promising) so perhaps time to revist.