In case anyone missed it, it looks like BI points at Sephora do expire now, however only when your account is completely inactive for 18 months. So as long as you make an order, redeem a point perk, or get your b-day gift once every year and a half you should be ok.
3. Point Expiration
It’s our hope that you redeem your points on a regular basis. All unredeemed points shall expire when a program member has not engaged in point activity associated with that membership account (through purchase or redemption) for 18 months or more. If you have questions regarding the date of your last point activity or your last purchase, you may call 1-877-SEPHORA (1-877-737-4672) for more information.
In addition, points will automatically expire if your Membership is revoked or otherwise cancelled for reasons further detailed in Section 17.