Nope. Deep linking to apps is a solved area. Reddit completely drops the ball on this, and has for years. Their engineering is a complete shambles. The only reason they survive is their market share, not for any reason of 'good experience'
I'm almost tempted to apply for a job at Reddit to see why their engineering is such omnishambles. It's impressive in a way. The only good thing I have to say about it is that they're committed to keeping old.reddit.com alive indefinitely.