I think this is a reality as far as Sinema goes, since everything she's done of late seems to revolve around getting paid.
https://www.twitter.com/i/web/status/1443222887238885384/
As far as Manchin goes, he's still reminding everyone what he's really about. Things have to revolve around him and what he wants, not what the majority wants.
Let's be realistic here, IF dems did the delaying efforts of meeting whatever requirement he wants, ...there will be another... and another... and another. As long as it keeps Manchin the focus.
If you have your doubts, I take you back to January of this year...
Was Manchin even MORE fiscally insane during the inauguration period when it made him look good?