What's going to get you rejected as an older or experienced dev is whether you fall or don't fall for the typical recruitment cons and how well you play along with the usual interview game theory tactics i.e. prisoner's dilemma scenarios.
Last summer I interviewed at a ton of companies and truly I rejected them way before they rejected me but what I learned essentially is that if you fall for the typical recruitment razzmataz as a more experienced dev then they'll assume you're stupid and if you don't fall for it they'll assume you're too smart, if you catch my drift.
Where once we were meant to show enthusiasm now we're supposed to play cool. How many companies lead with "We're pretty casual around here" as if that doesn't actually mean "we'll fire you on a dime"
You have to tread a very fine line that shows you're willing to play dumb while at the same time showing you have the chops -- it's more about how much cognitive dissonance or doublethink you can stomach than anything to do with your vital statistics and all these technical interviews are bollocks compared to fourth year courses in a world where most devs barely speak English but I digress
I have literally seen everything in this industry from from y2k to working with distributed overseas teams to getting tattooed in San Francisco and there's nothing new under the sun except for rife imposterism and rampant entitlement.
They're sizing you up the same way you're sizing them up with respect to the developer stereotypes and management dramas and all that toxic crap while testing you to see if you're willing to play along with their dysfunction and so called "culture fit" aka groupthink mentality.
You can probably tell I have no love left for this lost generation of code monkeys, after having fathered them along with an entire generation of misfits and dreamers whereas now they're all trying to fit in and losing themselves to the machine.
Once they learn how to do adulting maybe they'll learn to have more fun. Until then they're just a bunch of lemmings at the gate.
I'd go further into this downward spiral but I'll show myself out. Think about what you'll look like as a sixty year old wearing hoodies and t shirts and ask yourself whether you've made the right life choices.
Cue the downvotes you filthy scoundrels.