Is aiming for 1:3 Risk-to-Reward making traders worse at risk management?

Holding out for a 1:3 or 1:5 R:R sounds elite on paper, but if your win rate drops to 20%, you spend weeks enduring crippling loss streaks that wreck your psychology. Are traders who take a 1:1 or 1:1.5 R:R with a 70% win rate actually managing risk better than 'ratio purists'?