Yerroble - not really :) If she's 11 then car seat rules haven't changed much since then. The main difference is that the culture around car seats is changing, awareness is increasing about the benefits of rear facing and far more affordable seats are on the market. I also have an 11yo, and he went forward facing at 18 months, now still uses a booster (much to his chagrin) as I don't feel the seatbelt fits him correctly without it. We are in Germany so the law is 150cm here, rather than 135cm - he would have reached that years ago, but he didn't fit correctly in an adult seatbelt when he was just that height.
I will not be forward facing my now 13mo at 18 months because my knowledge is updated, meaning I'm less comfortable with the risk now than I was then, but mainly because I had the means and motivation this time to buy him a longer-lasting rear facing seat. We have our own car and we have a higher income. When DS1 was this age, I had no car, no driving licence and not very much money so I bought a forward facing seat, and I still think that was a reasonable choice at the time.
I don't think a conversation about always rear facing to X age (except the lower age points) is especially helpful, what's important is that people feel it is accessible and possible for them to make decisions they feel safe making.
I would like to see the 15 month rule be law regardless of the type of seat people are using but currently it's not. I also like that it's no longer tied to the weight class of the seat (which is why the 9kg limit is so low; it's very outdated now and was first proposed in the 80s, when hardly anybody used a car seat - a forward facing car seat even for a 6 month old is a massive improvement over no seatbelt at all!) - because this means that in the future it's likely this age-based limit will be increased. I would expect to see 3 years as the standard eventually. I don't actually think it will go higher than that. There's just not much evidence for it if you break it down - the reason I think a lot of European experts are going with age 4 currently is about people saying/thinking "Oh well he/she is nearly , there's no point buying a whole other seat just to get her another couple of months of use."
I found this an interesting read - about the realities of types of car seat used in Sweden (where child deaths from road accidents are almost zero - and those who die tend to be in catastrophic accidents that no car seat could have saved them from.)
www.besafe.com/wp-content/uploads/2019/06/BeSafe_Studie_Volkswagen_INT.pdf