I have had RFT repairs, it just depends on how low it got, how far you drove on it at that low pressure (both related to potential heat damage to the structure of the tire) and then also where the hole is (not too close to or in the sidewall).

If it was properly repaired with an inside patch, considering the above limitations, then there are no worries with the tire.

When RFTs first came out, there was little real information on repairing them, so dealers used that fear to sell a lot of tire insurance policies, which have a very good profit margin for them. The fear persists.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue