The technology here is the
least of that small shareholder's problems.
To register that land, they need to convince a corruptible human to accept their application, get another corruptible human to enter the data correctly in the database and get a third corruptible human to give them an authentic certificate proving that their land holding has been registered. You can already see three points where this can be trivially subverted, but it gets worse.
The hard part, you see, is defending their property rights. Local bigwig casually stomps on their land, now they need to convince the corruptible police to investigate (good luck with that when they're on the bigwig's payroll), find a lawyer willing to take this on (in exchange for what?), get the corruptible land rights registry to verify their claim, get a corruptible judge to give a true verdict, and then convince that corruptible police to carry out the verdict. If you're a poor subsistence farmer, it's nearly impossible to navigate this morass, and blockchain solves precisely zero of these problems.
Finally and most fundamentally, a land registry is by nature a centralized registry of holdings with a legal monopoly. Why on earth would you need to use a blockchain here, when an append-only database does the same job?