Again, define 'better'? To implement tail current, you need some kind of communication with your charge controllers to stop putting in power, or a BMS that can limit current. Neither which are a good solution: find me a BMS that does this, or tell me why I should right away involve my battery to power the load when solar (and the charge controller) can continue to power my load, but are told by the BMS to stop.
Tail current is great when you a) test batteries, or b) have an application that is ideal in the sense that charging the battery and discharging the battery happens in sync with available/non available energy. When in practice, I have a fluctuating source of power from which I want to capture the most amount as possible, and just stopping at 3.5V (or 3.55V) charging voltage will do just that without any balancing issues (again, five years in with my packs if you want real world experience). Also, again, imagine you're at 3.5V (due to a very quick burst of incoming solar) and you have a cloud come over which makes your current drop. How do you distinguish that from meeting the tail current?
For my personal Victron GX system using their MPPT's a SmartShunt and DVCC it's fairly easy to set the tail current at the voltage point and I set a few min charge detection time to minimise cloud affects, the MPPT's will automatically power loads when the battery is full.
I guess if you're saying to just stop at 3.5V or 3.55V then that's also gonna have a safe tail current by definition of the voltage / charge curves, even in a normal dynamic solar system if you don't have an easy way to determine it and hold at the voltage until it's reached. So a similar outcome as the OP but without the antagonistic statements.
But lots of people here who are relatively new to LFP like me, I've only done three other Victron / Pylontech systems before, and now and I'm about to build / install my own LFP bank to replace the flooded Pb's I've been using for the last 12 years off grid (Boat)
We don't always see the subtleties of the charging advice like just stop at 3.5V, (I think good advice, and from someone with real world experience!) which will normally be above the recommended tail current absolute limit anyway, but many still seem to hold a set charge voltage for an arbitrary time, way beyond the manufacturers recommended tail current cut off, and surely overcharge / decrease the lifespan of their cells, just as going hard over the voltage knees does, which are both specified on the data sheets but only the former is generally seen as the key target to adhere to and the latter is a mystical specification sheet anomoly, when they're surely directly related?
So as the OP, ungraciously points to, maybe we should think a bit more about the tail current - especially to help stop people who are likely to go way over it? - Like grid charging for hours sat at absorption voltage beyond minimum tail current or parallel cell balancing at a below cell spec tail current for extended periods - There's quite a few forum pics of bulging cells!
No offence to anyone intended, I'm a newbie here too, just wanting to learn more.