It's hard to say. Perhaps LLMs of tomorrow will become capable enough to fix the mistakes of LLMs today. If so, great -- I'm worried about nothing.
If not, we could see that LLMs of tomorrow struggle to keep up with the bloat of today. The "interest on tech debt" is a huge unknown metric w.r.t. agents.
If the answer is yes then it’s a tragedy - but one that presumably will pass once we collectively discover it. If not, then it’s just nostalgic.