This is an extremely limited view of "scientific computing" that seems to only focus on analytics, which is a tiiiny part of sci comp.
Your "stack" does nothing for solving/including ODEs, PDEs, DAEs, Fourier analysis, numerical integration, automatic differentiation, linear equation system solvers, preconditioners, nonlinear equation system solvers, the entire field of optimization, inverse problems, statistical methods, Monte Carlo simulations, molecular dynamics, PIC methods, geometric integration, lattice quantum field theory, molecular dynamics, ab initio methods, density functional theory, finite difference/volume/element methods, lattice Boltzmann methods, boundary integral methods, mesh generation methods, error estimation, uncertainty quantification...
Those are just off the top of my head, the list goes on and on.
Your "stack" does nothing for solving/including ODEs, PDEs, DAEs, Fourier analysis, numerical integration, automatic differentiation, linear equation system solvers, preconditioners, nonlinear equation system solvers, the entire field of optimization, inverse problems, statistical methods, Monte Carlo simulations, molecular dynamics, PIC methods, geometric integration, lattice quantum field theory, molecular dynamics, ab initio methods, density functional theory, finite difference/volume/element methods, lattice Boltzmann methods, boundary integral methods, mesh generation methods, error estimation, uncertainty quantification...
Those are just off the top of my head, the list goes on and on.