Well, I can’t speak to the section of track north of Philadelphia, but the section of “high-speed” track north of NYC has STILL not been upgraded with cement ties!
This is important because cement ties — unlike wooden ties — do not permit their “spikes” to get loose and wobbly, and therefore keep the steel rails “in place”.
Strangely enough, the low-speed tracks that bring commuters home did have their wooden ties replaced with cement ties.
“Beautification” of the commuter stations seems to have plenty of money.
All concrete ties in that immediate section - all four tracks.