Of course, all crypto traders and everyone on this forum abides by their local jurisdictions and pays their taxes, don't they?? LOL
My point is - buying for tax reasons, a house for example, isn't (or shouldn't be) a prime determining factor.
For most people, decisions on buying a house is usually predicated on location to job, family, or school or pride of ownership; then other secondary reasons, such as price (vs. renting), where tax issues are examined.
Buying or selling for tax reasons is almost always a bad idea because one is entering the market with the primary objective of loosing money. More often than not investors that enter the market with the objective of loosing money actually achieve their objective and loose money! This does not mean there are many fools who believe then can outwit "lady tax" https://www.youtube.com/watch?v=_DoSQS8oUaQ and many pedallers of dubious investments that prey on them.
I do suspect tax selling has been a factor in the price of XBT at the end of this year and this has also impacted the price of many alt-coins.
I'm not saying that anyone enters the crypto market for tax reasons or to lose money , but if you find yourself already holding a particular currency that has tanked (we all have a couple) and that includes bitcoin if you bought when it was high, you may be able to save a lot off your tax bill if you declare that loss. Of course that is assuming you have a job or investment income outside of cryptocurrency that you have paid income tax on. Somehow the wealthy have managed to do this in the stock market, as well as everything else "lady tax" allows, for generations and the only thing that has happened to them is... they got wealthier.
This is something you would take advantage of, only if it would result in a financial advantage for your particular circumstances.
p.s. If you don't pay taxes, ignore this thread!