Is it true that the Oneplus series are fragile

Alot of my friends who bought the Oneplus phones regret it within a year because it started to lag, and the internal got messed up. I just want a clarification on this issue as i cant seem to find other evidence that pointed to this. Any user who have used any oneplus phones mind sharing their opinions?

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I have had the Oneplus X for 1.5 years, and I have now had the Oneplus 5 for over a half year. 0 issues with either phone, no lag either. They both ran smooth like the day i bought them. As for being fragile, i would say they're not any more or less resistant to breaking from a drop than any other phone but a good case will prevent that. I love my phone and i look forward to my next Oneplus phone down the line.

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