I just wanted to mention this.
It's a common misconception, especially among newer aroidists, that philodendron stems have to be young and green to be successfully propagated by stem cuttings.
This is not true. Those older 'woody' stems will propagate just as easily.
A stem doesn't have to be green and softer for the nodes to activate when it's cut, and produce new shoots.
Over the years I've raised several different climbing philos that have gotten very old and developed woody stems, like this Jose Buono I named Big Joe. It was a massive plant and it's size was causing some trouble. So I gave it the chop. And got huge pieces with woody stems.
All of which are now resprouting new shoots at multiple nodes.

Remember when I propped Big Joe? This is the base. It has resprouted FIVE new leads. I have a feeling it will be up the wall lickity split again. I'll try and contain it better this time to keep it out of the fan LOL. All the props I took off it are also growing, most with multiple leads